tools: move to src

FossilOrigin-Name: e320e235b6dd6b0d4b0d04df12c1c5e481c524412d286dc6375b6cd4231eed8b

1 files changed, 0 insertions, 1526 deletions

diff --git a/tools/cpt-lib b/tools/cpt-lib
deleted file mode 100644
index c72f7f9..0000000
--- a/tools/cpt-lib
+++ /dev/null
@@ -1,1526 +0,0 @@
-#!/bin/sh -ef
-# shellcheck source=/dev/null
-#
-# This is a simple package manager written in POSIX 'sh' for use
-# in KISS Linux (https://k1ss.org).
-#
-# This script runs with '-ef' meaning:
-# '-e': Abort on any non-zero exit code.
-# '-f': Disable globbing globally.
-#
-# [1] Warnings related to word splitting and globbing are disabled.
-# All word splitting in this script is *safe* and intentional.
-#
-# Dylan Araps.
-
-version() {
-    log "Carbs Packaging Tools" 3.0.0
-    exit 0
-}
-
-out() {
-    # Print a message as is.
-    printf '%s\n' "$@"
-}
-
-log() {
-    # Print a message prettily.
-    #
-    # All messages are printed to stderr to allow the user to hide build
-    # output which is the only thing printed to stdout.
-    #
-    # '\033[1;32m'        Set text to color '2' and make it bold.
-    # '\033[m':           Reset text formatting.
-    # '${3:-->}':         If the 3rd argument is missing, set prefix to '->'.
-    # '${2:+\033[1;3Xm}': If the 2nd argument exists, set text style of '$1'.
-    printf '\033[1;33m%s \033[m%b%s\033[m %s\n' \
-           "${3:-->}" "${2:+"\033[1;36m"}" "$1" "$2" >&2
-}
-
-die() {
-    # Print a message and exit with '1' (error).
-    log "$1" "$2" "!>"
-    exit 1
-}
-
-warn() {
-    # Print a warning message
-    log "WARN" "$1" "${2:-!>}"
-}
-
-contains() {
-    # Check if a "string list" contains a word.
-    case " $1 " in *" $2 "*) return 0; esac; return 1
-}
-
-regesc() {
-    # Escape special regular expression characters as
-    # defined in POSIX BRE. '$.*[\^'
-    printf '%s\n' "$1" | sed 's|\\|\\\\|g;s|\[|\\[|g;s|\$|\\$|g;s|\.|\\.|g;s|\*|\\*|g;s|\^|\\^|g'
-}
-
-
-prompt() {
-    # If a CPT_NOPROMPT variable is set, continue.
-    # This can be useful for installation scripts and
-    # bootstrapping.
-    [ "$CPT_PROMPT" = 0 ] && return 0
-
-    # Ask the user for some input.
-    [ "$1" ] && log "$1"
-    log "Continue?: Press Enter to continue or Ctrl+C to abort here"
-
-    # POSIX 'read' has none of the "nice" options like '-n', '-p'
-    # etc etc. This is the most basic usage of 'read'.
-    # '_' is used as 'dash' errors when no variable is given to 'read'.
-    read -r _ || return 1
-}
-
-as_root() {
-    # Simple function to run a command as root using either 'sudo',
-    # 'doas' or 'su'. Hurrah for choice.
-    [ "$uid" = 0 ] || log "Using '${su:-su}' (to become ${user:=root})"
-
-    case ${su##*/} in
-        sudo) sudo -E -u "$user" -- "$@" ;;
-        doas) doas    -u "$user" -- "$@" ;;
-        su)   su -pc "env USER=$user $* <&3" "$user" 3<&0 </dev/tty ;;
-        *)    die "Invalid CPT_SU value: $su" ;;
-    esac
-}
-
-pop() {
-    # Remove an item from a "string list". This allows us
-    # to remove a 'sed' call and reuse this code throughout.
-    del=$1
-    shift 2
-
-    for i do [ "$i" = "$del" ] || printf %s " $i "; done
-}
-
-run_hook() {
-    # If a fourth parameter 'root' is specified, source
-    # the hook from a predefined location to avoid privilige
-    # escalation through user scripts.
-    [ "$4" ] && CPT_HOOK=$CPT_ROOT/etc/cpt-hook
-
-    # This is not a misspelling, can be ignored safely.
-    # shellcheck disable=2153
-    [ -f "$CPT_HOOK" ] || return 0
-
-    log "$2" "Running $1 hook"
-
-    TYPE=${1:-null} PKG=${2:-null} DEST=${3:-null} . "$CPT_HOOK"
-}
-
-decompress() {
-    case $1 in
-        *.tar)      cat       ;;
-        *.bz2)      bzip2 -cd ;;
-        *.xz|*.txz) xz -dcT 0 ;;
-        *.tgz|*.gz) gzip -cd  ;;
-        *.zst)      zstd -cd  ;;
-    esac < "$1"
-}
-
-sh256() {
-    # This is a sha256sum function for outputting a standard
-    # hash digest. sha256 on BSD systems require an '-r' flag
-    # for outputting the same way with sha256sum, and still,
-    # it outputs a single space between the hash and the file
-    # whereas sha256sum outputs double spaces. It fallbacks to
-    # openssl, but that is rarely ever needed.
-    { sha256sum "$1" 2>/dev/null   ||
-      sha256 -r "$1" 2>/dev/null   ||
-      openssl dgst -r -sha256 "$1" ||
-      die "No sha256 program could be run." ;} |
-
-        while read -r hash _; do printf '%s  %s\n' "$hash" "$1"; done
-}
-
-pkg_isbuilt() (
-    # Check if a package is built or not.
-    repo_dir=$(pkg_find "$1")
-    read -r ver rel < "$repo_dir/version"
-
-    set +f
-    for tarball in "$bin_dir/$1#$ver-$rel.tar."*; do
-        [ -f "$tarball" ] && return 0
-    done
-    return 1
-)
-
-pkg_lint() {
-    # Check that each mandatory file in the package entry exists.
-    log "$1" "Checking repository files"
-
-    repo_dir=$(pkg_find "$1")
-
-    cd "$repo_dir" || die "'$repo_dir' not accessible"
-    [ -f sources ] || die "$1" "Sources file not found"
-    [ -x build ]   || die "$1" "Build file not found or not executable"
-    [ -s version ] || die "$1" "Version file not found or empty"
-
-    read -r _ release 2>/dev/null < version || die "Version file not found"
-    [ "$release" ] || die "Release field not found in version file"
-
-    [ "$2" ] || [ -f checksums ] || die "$pkg" "Checksums are missing"
-}
-
-pkg_find() {
-    # Use a SEARCH_PATH variable so that we can get the sys_db into
-    # the same variable as CPT_PATH. This makes it easier when we are
-    # searching for executables instead of CPT_PATH.
-    : "${SEARCH_PATH:=$CPT_PATH:$sys_db}"
-
-    # Figure out which repository a package belongs to by
-    # searching for directories matching the package name
-    # in $CPT_PATH/*.
-    query=$1 match=$2 type=$3 IFS=:; set --
-
-    # Word splitting is intentional here.
-    # shellcheck disable=2086
-    for path in $SEARCH_PATH ; do
-        set +f
-
-        for path2 in "$path/"$query; do
-            test "${type:--d}" "$path2" && set -f -- "$@" "$path2"
-        done
-    done
-
-    unset IFS
-
-    # A package may also not be found due to a repository not being
-    # readable by the current user. Either way, we need to die here.
-    [ "$1" ] || die "Package '$query' not in any repository"
-
-    # Show all search results if called from 'cpt search', else
-    # print only the first match.
-    [ "$match" ] && printf '%s\n' "$@" || printf '%s\n' "$1"
-}
-
-pkg_list() {
-    # List installed packages. As the format is files and
-    # directories, this just involves a simple for loop and
-    # file read.
-
-    # Change directories to the database. This allows us to
-    # avoid having to 'basename' each path. If this fails,
-    # set '$1' to mimic a failed glob which indicates that
-    # nothing is installed.
-    cd "$sys_db" 2>/dev/null || set -- "$sys_db/"\*
-
-    # Optional arguments can be passed to check for specific
-    # packages. If no arguments are passed, list all. As we
-    # loop over '$@', if there aren't any arguments we can
-    # just set the directory contents to the argument list.
-    [ "$1" ] || { set +f; set -f -- *; }
-
-    # If the 'glob' above failed, exit early as there are no
-    # packages installed.
-    [ "$1" = "$sys_db/"\* ] && return 1
-
-    # Loop over each package and print its name and version.
-    for pkg do
-        [ -d "$pkg" ] || { log "$pkg" "not installed"; return 1; }
-
-        read -r version 2>/dev/null < "$pkg/version" || version=null
-        printf '%s\n' "$pkg $version"
-    done
-}
-
-pkg_cache() {
-    read -r version release 2>/dev/null < "$(pkg_find "$1")/version"
-
-    set +f; set -f -- "$bin_dir/$1#$version-$release.tar."*
-    tar_file=$1
-
-    [ -f "$tar_file" ]
-}
-
-pkg_sources() {
-    # Download any remote package sources. The existence of local
-    # files is also checked.
-    log "$1" "Downloading sources"
-
-    # Store each downloaded source in a directory named after the
-    # package it belongs to. This avoid conflicts between two packages
-    # having a source of the same name.
-    mkdir -p "$src_dir/$1" && cd "$src_dir/$1"
-
-    repo_dir=$(pkg_find "$1")
-
-    while read -r src dest || [ "$src" ]; do
-        # Comment.
-        if [ -z "${src##\#*}" ]; then :
-
-        # Remote source (cached).
-        elif [ -f "${src##*/}" ]; then
-            log "$1" "Found cached source '${src##*/}'"
-
-        # Remote git repository.
-        elif [ -z "${src##git+*}" ]; then
-            # This is a checksums check, skip it.
-            [ "$2" ] && continue
-
-            # Since git is an optional dependency, make sure
-            # it is available on the system.
-            command -v git >/dev/null ||
-                die "git must be installed in order to acquire ${src##git+}"
-
-            mkdir -p "$mak_dir/$1/$dest"
-
-            # Run in a subshell to keep the variables, path and
-            # argument list local to each loop iteration.
-            (
-                repo_src=${src##git+}
-
-                log "$1" "Cloning ${repo_src%[@#]*}"
-
-                # Git has no option to clone a repository to a
-                # specific location so we must do it ourselves
-                # beforehand.
-                cd "$mak_dir/$1/$dest" 2>/dev/null || die
-
-                # Clear the argument list as we'll be overwriting
-                # it below based on what kind of checkout we're
-                # dealing with.
-                set -- "$repo_src"
-
-                # If a branch was given, shallow clone it directly.
-                # This speeds things up as we don't have to grab
-                # a lot of unneeded commits.
-                [ "${src##*@*}" ] ||
-                    set -- -b "${src##*@}" "${repo_src%@*}"
-
-                # Maintain compatibility with older versions of
-                # cpt by shallow cloning all branches. This has
-                # the added benefit of allowing checkouts of
-                # specific commits in specific branches.
-                [ "${src##*#*}" ] ||
-                    set -- --no-single-branch "${repo_src%#*}"
-
-                # Always do a shallow clone as we will unshallow it if
-                # needed later (when a commit is desired).
-                git clone --depth=1 "$@" .
-
-            ) || die "$1" "Failed to clone $src"
-
-        # Remote source.
-        elif [ -z "${src##*://*}" ]; then
-            log "$1" "Downloading $src"
-
-            curl "$src" -fLo "${src##*/}" || {
-                rm -f "${src##*/}"
-                die "$1" "Failed to download $src"
-            }
-
-        # Local source.
-        elif [ -f "$repo_dir/$src" ]; then
-            log "$1" "Found local file '$src'"
-
-        else
-            die "$1" "No local file '$src'"
-        fi
-    done < "$repo_dir/sources"
-}
-
-pkg_extract() {
-    # Extract all source archives to the build directory and copy over
-    # any local repository files.
-    log "$1" "Extracting sources"
-
-    repo_dir=$(pkg_find "$1")
-
-    while read -r src dest || [ "$src" ]; do
-        mkdir -p "$mak_dir/$1/$dest" && cd "$mak_dir/$1/$dest"
-
-        case $src in
-            # Git repository with supplied commit hash.
-            git+*\#*)
-                log "Checking out ${src##*#}"
-
-                # A commit was requested, unshallow the repository.
-                # This will convert it to a regular repository with
-                # full history.
-                git fetch --unshallow
-
-                # Try to checkout the repository. If we fail here,
-                # the requested commit doesn't exist.
-                git -c advice.detachedHead=false checkout "${src##*#}" ||
-                    die "Commit hash ${src##*#} doesn't exist"
-            ;;
-
-            # Git repository, comment or blank line.
-            git+*|\#*|'') continue ;;
-
-            # Only 'tar' an 'zip' archives are currently supported for
-            # extraction. Other filetypes are simply copied to '$mak_dir'
-            # which allows for manual extraction.
-            *://*.tar|*://*.tar.??|*://*.tar.???|*://*.tar.????|*://*.tgz|*://*.txz)
-
-                decompress "$src_dir/$1/${src##*/}" > .ktar
-
-                "$tar" xf .ktar || die "$1" "Couldn't extract ${src##*/}"
-
-                # We now list the contents of the tarball so we can do our
-                # version of 'strip-components'.
-                "$tar" tf .ktar |
-                    while read -r file; do printf '%s\n' "${file%%/*}"; done |
-
-                    # Do not repeat files.
-                    uniq |
-
-                    # For every directory in the base we move each file
-                    # inside it to the upper directory.
-                    while read -r dir ; do
-
-                        # Skip if we are not dealing with a directory here.
-                        # This way we don't remove files on the upper directory
-                        # if a tar archive doesn't need directory stripping.
-                        [ -d "${dir#.}" ] || continue
-
-                        # Change into the directory in a subshell so we don't
-                        # need to cd back to the upper directory.
-                        (
-                            cd "$dir"
-
-                            # We use find because we want to move hidden files
-                            # as well.
-                            #
-                            # Skip the file if it has the same name as the directory.
-                            # We will deal with it later.
-                            #
-                            # Word splitting is intentional here.
-                            # shellcheck disable=2046
-                            find . \( ! -name . -prune \) ! -name "$dir" \
-                                 -exec mv -f {} .. \;
-
-                            # If a file/directory with the same name as the directory
-                            # exists, append a '.cptbak' to it and move it to the
-                            # upper directory.
-                            ! [ -e "$dir" ] || mv "$dir" "../${dir}.cptbak"
-                        )
-                        rmdir "$dir"
-
-                        # If a backup file exists, move it into the original location.
-                        ! [ -e "${dir}.cptbak" ] || mv "${dir}.cptbak" "$dir"
-                done
-
-                # Clean up the temporary tarball.
-                rm -f .ktar
-            ;;
-
-            *://*.zip)
-                unzip "$src_dir/$1/${src##*/}" ||
-                    die "$1" "Couldn't extract ${src##*/}"
-
-            ;;
-
-            *)
-                # Local file.
-                if [ -f "$repo_dir/$src" ]; then
-                    cp -f "$repo_dir/$src" .
-
-                # Remote file.
-                elif [ -f "$src_dir/$1/${src##*/}" ]; then
-                    cp -f "$src_dir/$1/${src##*/}" .
-
-                else
-                    die "$1" "Local file $src not found"
-                fi
-            ;;
-        esac
-    done < "$repo_dir/sources"
-}
-
-pkg_depends() {
-    # Resolve all dependencies and generate an ordered list.
-    # This does a depth-first search. The deepest dependencies are
-    # listed first and then the parents in reverse order.
-    contains "$deps" "$1" || {
-        # Filter out non-explicit, aleady installed dependencies.
-        # Only filter installed if called from 'pkg_build()'.
-        [ "$pkg_build" ] && [ -z "$2" ] &&
-            (pkg_list "$1" >/dev/null) && return
-
-        # Recurse through the dependencies of the child packages.
-        while read -r dep _ || [ "$dep" ]; do
-            [ "${dep##\#*}" ] && pkg_depends "$dep"
-        done 2>/dev/null < "$(pkg_find "$1")/depends" ||:
-
-        # After child dependencies are added to the list,
-        # add the package which depends on them.
-        [ "$2" = explicit ] || deps="$deps $1 "
-    }
-}
-
-pkg_order() {
-    # Order a list of packages based on dependence and
-    # take into account pre-built tarballs if this is
-    # to be called from 'cpt i'.
-    order=; redro=; deps=
-
-    for pkg do case $pkg in
-        *.tar.*) deps="$deps $pkg "  ;;
-        *)       pkg_depends "$pkg" raw
-    esac done
-
-    # Filter the list, only keeping explicit packages.
-    # The purpose of these two loops is to order the
-    # argument list based on dependence.
-    for pkg in $deps; do ! contains "$*" "$pkg" || {
-        order="$order $pkg "
-        redro=" $pkg $redro"
-    } done
-
-    deps=
-}
-
-pkg_strip() {
-    # Strip package binaries and libraries. This saves space on the
-    # system as well as on the tarballs we ship for installation.
-
-    # Package has stripping disabled, stop here.
-    [ -f "$mak_dir/$pkg/nostrip" ] && return
-
-    log "$1" "Stripping binaries and libraries"
-
-    find "$pkg_dir/$1" -type f | while read -r file; do
-        case $(od -A o -t c -N 18 "$file") in
-            # REL (object files (.o), static libraries (.a)).
-            *177*E*L*F*0000020\ 001\ *|*\!*\<*a*r*c*h*\>*)
-                strip -g -R .comment -R .note "$file"
-            ;;
-
-            # EXEC (static binaries).
-            # DYN (shared libraries, dynamic binaries).
-            # Shared libraries keep global symbols in a separate ELF section
-            # called '.dynsym'. '--strip-all/-s' does not touch the dynamic
-            # symbol entries which makes this safe to do.
-            *177*E*L*F*0000020\ 00[23]\ *)
-                strip -s -R .comment -R .note "$file"
-            ;;
-        esac
-    done 2>/dev/null ||:
-}
-
-pkg_fixdeps() {
-    # Dynamically look for missing runtime dependencies by checking
-    # each binary and library with 'ldd'. This catches any extra
-    # libraries and or dependencies pulled in by the package's
-    # build suite.
-    log "$1" "Checking for missing dependencies"
-
-    # Go to the directory containing the built package to
-    # simplify path building.
-    cd "$pkg_dir/$1/$pkg_db/$1"
-
-    # Make a copy of the depends file if it exists to have a
-    # reference to 'diff' against.
-    if [ -f depends ]; then
-        cp -f depends "$mak_dir/d"
-        dep_file=$mak_dir/d
-    else
-        dep_file=/dev/null
-    fi
-
-    # Generate a list of all installed manifests.
-    pkg_name=$1
-    set +f; set -f -- "$sys_db/"*/manifest
-
-    # Get a list of binaries and libraries, false files
-    # will be found, however it's faster to get 'ldd' to check
-    # them anyway than to filter them out.
-    find "$pkg_dir/$pkg_name/" -type f 2>/dev/null |
-
-    while read -r file; do
-        # Run 'ldd' on the file and parse each line. The code
-        # then checks to see which packages own the linked
-        # libraries and it prints the result.
-        ldd "$file" 2>/dev/null | while read -r dep; do
-            # Skip lines containing 'ldd'.
-            [ "${dep##*ldd*}" ] || continue
-
-            # Extract the file path from 'ldd' output, and
-            # canonicalize the path.
-            dep=${dep#* => }
-            dep=${dep% *}
-            dep=$(cpt-readlink "$dep")
-
-            # Figure out which package owns the file.
-            own=$("$grep" -lFx "${dep#$CPT_ROOT}" "$@")
-
-            # If the package wasn't found, retry by removing
-            # the '/usr' prefix.
-            if [ -z "$own" ] && [ -z "${dep##$CPT_ROOT/usr*}" ]; then
-                own=$("$grep" -lFx "${dep#$CPT_ROOT/usr}" "$@")
-                dep=${dep#/usr}
-            fi
-
-            # Extract package name from 'grep' match.
-            own=${own%/*}
-            own=${own##*/}
-
-            case $own in "$pkg_name"|"$pkg_name-bin"|"") continue ; esac
-            printf 'Found %s (%s) in (%s)\n' "$own" "$dep" \
-                   "${file##$pkg_dir/$pkg_name}" >/dev/tty
-
-            printf '%s\n' "$own"
-        done ||:
-    done >> depends
-
-    # Remove duplicate entries from the new depends file.
-    # This removes duplicate lines looking *only* at the
-    # first column.
-    sort -uk1,1 -o depends depends 2>/dev/null ||:
-
-    # Display a diff of the new dependencies against the old ones.
-    diff -U 3 "$dep_file" depends 2>/dev/null ||:
-
-    # Remove the depends file if it is empty.
-    [ -s depends ] || rm -f depends
-}
-
-pkg_manifest() (
-    # Generate the package's manifest file. This is a list of each file
-    # and directory inside the package. The file is used when uninstalling
-    # packages, checking for package conflicts and for general debugging.
-    log "$1" "Generating manifest"
-
-    # This function runs as a sub-shell to avoid having to 'cd' back to the
-    # prior directory before being able to continue.
-    cd "${2:-$pkg_dir}/$1"
-
-    # find: Print all files and directories and append '/' to directories.
-    # sort: Sort the output in *reverse*. Directories appear *after* their
-    #       contents.
-    # sed:  Remove the first character in each line (./dir -> /dir) and
-    #       remove all lines which only contain '.'.
-    find . -type d -exec printf '%s/\n' {} + -o -print |
-        sort -r | sed '/^\.\/$/d;ss.ss' > "${2:-$pkg_dir}/$1/$pkg_db/$1/manifest"
-)
-
-pkg_etcsums() (
-    # This function runs as a sub-shell to avoid having to 'cd' back to the
-    # prior directory before being able to continue.
-    cd "$pkg_dir/$1/etc" 2>/dev/null || return 0; cd ..
-
-    # Generate checksums for each configuration file in the package's
-    # /etc/ directory for use in "smart" handling of these files.
-    log "$1" "Generating etcsums"
-
-
-    find etc -type f | while read -r file; do
-        sh256 "$file"
-    done > "$pkg_dir/$1/$pkg_db/$1/etcsums"
-)
-
-pkg_tar() {
-    # Create a tarball from the built package's files.
-    # This tarball also contains the package's database entry.
-    log "$1" "Creating tarball"
-
-    # Read the version information to name the package.
-    read -r version release < "$(pkg_find "$1")/version"
-
-    # Create a tarball from the contents of the built package.
-    "$tar" cf - -C "$pkg_dir/$1" . |
-        case $CPT_COMPRESS in
-            bz2) bzip2 -z ;;
-            xz)  xz -zT 0 ;;
-            gz)  gzip -6  ;;
-            zst) zstd -3  ;;
-            *)   gzip -6  ;;  # Fallback to gzip
-        esac \
-    > "$bin_dir/$1#$version-$release.tar.$CPT_COMPRESS"
-
-    log "$1" "Successfully created tarball"
-
-    run_hook post-package "$1" "$bin_dir/$1#$version-$release.tar.$CPT_COMPRESS"
-}
-
-pkg_build() {
-    # Build packages and turn them into packaged tarballs. This function
-    # also checks checksums, downloads sources and ensure all dependencies
-    # are installed.
-    pkg_build=1
-
-    log "Resolving dependencies"
-
-    for pkg do contains "$explicit" "$pkg" || {
-        pkg_depends "$pkg" explicit
-
-        # Mark packages passed on the command-line
-        # separately from those detected as dependencies.
-        explicit="$explicit $pkg "
-    } done
-
-    [ "$pkg_update" ] || explicit_build=$explicit
-
-    # If an explicit package is a dependency of another explicit
-    # package, remove it from the explicit list as it needs to be
-    # installed as a dependency.
-    # shellcheck disable=2086
-    for pkg do
-        contains "$deps" "$pkg" && explicit=$(pop "$pkg" from $explicit)
-    done
-
-    # See [1] at top of script.
-    # shellcheck disable=2046,2086
-    set -- $deps $explicit
-
-    log "Building: $*"
-
-    # Only ask for confirmation if more than one package needs to be built.
-    [ $# -gt 1 ] || [ "$pkg_update" ] && { prompt || exit 0 ;}
-
-    log "Checking for pre-built dependencies"
-
-    for pkg do pkg_lint "$pkg"; done
-
-    # Install any pre-built dependencies if they exist in the binary
-    # directory and are up to date.
-    for pkg do ! contains "$explicit_build" "$pkg" && pkg_cache "$pkg" && {
-        log "$pkg" "Found pre-built binary, installing"
-        (CPT_FORCE=1 cpt-install "$tar_file")
-
-        # Remove the now installed package from the build list.
-        # See [1] at top of script.
-        # shellcheck disable=2046,2086
-        set -- $(pop "$pkg" from "$@")
-    } done
-
-    for pkg do pkg_sources "$pkg"; done
-
-    pkg_verify "$@"
-
-    # Finally build and create tarballs for all passed packages and
-    # dependencies.
-    for pkg do
-        log "$pkg" "Building package ($((in = in + 1))/$#)"
-
-        pkg_extract "$pkg"
-        repo_dir=$(pkg_find "$pkg")
-
-        read -r build_version _ < "$repo_dir/version"
-
-        # Install built packages to a directory under the package name
-        # to avoid collisions with other packages.
-        mkdir -p "$pkg_dir/$pkg/$pkg_db"
-
-        # Move to the build directory.
-        cd "$mak_dir/$pkg"
-
-        log "$pkg" "Starting build"
-
-        run_hook pre-build "$pkg" "$pkg_dir/$pkg"
-
-        # Call the build script, log the output to the terminal
-        # and to a file. There's no PIPEFAIL in POSIX shelll so
-        # we must resort to tricks like killing the script ourselves.
-        { "$repo_dir/build" "$pkg_dir/$pkg" "$build_version" "$sys_arch" 2>&1 || {
-            log "$pkg" "Build failed"
-            log "$pkg" "Log stored to $log_dir/$pkg-$time-$pid"
-            run_hook build-fail "$pkg" "$pkg_dir/$pkg"
-            pkg_clean
-            kill 0
-        } } | tee "$log_dir/$pkg-$time-$pid"
-
-        # Delete the log file if the build succeeded to prevent
-        # the directory from filling very quickly with useless logs.
-        [ "$CPT_KEEPLOG" = 1 ] || rm -f "$log_dir/$pkg-$time-$pid"
-
-        # Copy the repository files to the package directory.
-        # This acts as the database entry.
-        cp -LRf "$repo_dir" "$pkg_dir/$pkg/$pkg_db/"
-
-        # We never ever want this. Let's end the endless conflicts
-        # and remove it. This will be the only exception for a
-        # specific removal of this kind.
-        find "$pkg_dir/$pkg" -name charset.alias -exec rm -f {} +
-
-        log "$pkg" "Successfully built package"
-
-        run_hook post-build "$pkg" "$pkg_dir/$pkg"
-
-        # Create the manifest file early and make it empty.
-        # This ensures that the manifest is added to the manifest.
-        : > "$pkg_dir/$pkg/$pkg_db/$pkg/manifest"
-
-        # If the package contains '/etc', add a file called
-        # 'etcsums' to the manifest. See comment directly above.
-        [ -d "$pkg_dir/$pkg/etc" ] &&
-            : > "$pkg_dir/$pkg/$pkg_db/$pkg/etcsums"
-
-        pkg_strip    "$pkg"
-        pkg_fixdeps  "$pkg"
-        pkg_manifest "$pkg"
-        pkg_etcsums  "$pkg"
-        pkg_tar      "$pkg"
-
-        # Install only dependencies of passed packages.
-        # Skip this check if this is a package update.
-        contains "$explicit" "$pkg" && [ -z "$pkg_update" ] && continue
-
-        log "$pkg" "Needed as a dependency or has an update, installing"
-
-        (CPT_FORCE=1 cpt-install "$pkg")
-    done
-
-    # End here as this was a system update and all packages have been installed.
-    [ "$pkg_update" ] && return
-
-    log "Successfully built package(s)"
-
-    # Turn the explicit packages into a 'list'.
-    # See [1] at top of script.
-    # shellcheck disable=2046,2086
-    set -- $explicit
-
-    # Only ask for confirmation if more than one package needs to be installed.
-    [ $# -gt 1 ] && prompt "Install built packages? [$*]" && {
-        cpt-install "$@"
-        return
-    }
-
-    log "Run 'cpt i $*' to install the package(s)"
-}
-
-pkg_checksums() {
-    # Generate checksums for packages.
-    repo_dir=$(pkg_find "$1")
-
-    while read -r src _ || [ "$src" ]; do
-        # Comment.
-        if [ -z "${src##\#*}" ]; then
-            continue
-
-        # File is local to the package.
-        elif [ -f "$repo_dir/$src" ]; then
-            src_path=$repo_dir/${src%/*}
-
-        # File is remote and was downloaded.
-        elif [ -f "$src_dir/$1/${src##*/}" ]; then
-            src_path=$src_dir/$1
-
-        # File is a git repository.
-        elif [ -z "${src##git+*}" ]; then
-            printf 'git  %s\n' "$src"
-            continue
-
-        # Die here if source for some reason, doesn't exist.
-        else
-            die "$1" "Couldn't find source '$src'"
-        fi
-
-        # An easy way to get 'sha256sum' to print with the 'basename'
-        # of files is to 'cd' to the file's directory beforehand.
-        (cd "$src_path" && sh256 "${src##*/}") ||
-            die "$1" "Failed to generate checksums"
-    done < "$repo_dir/sources"
-}
-
-pkg_verify() {
-    # Verify all package checksums. This is achieved by generating
-    # a new set of checksums and then comparing those with the old
-    # set.
-    for pkg do pkg_checksums "$pkg" | diff - "$(pkg_find "$pkg")/checksums" || {
-        log "$pkg" "Checksum mismatch"
-
-        # Instead of dying above, log it to the terminal. Also define a
-        # variable so we *can* die after all checksum files have been
-        # checked.
-        mismatch="$mismatch$pkg "
-    } done
-
-    [ -z "$mismatch" ] || die "Checksum mismatch with: ${mismatch% }"
-}
-
-pkg_conflicts() {
-    # Check to see if a package conflicts with another.
-    log "$1" "Checking for package conflicts"
-
-    # Filter the tarball's manifest and select only files
-    # and any files they resolve to on the filesystem
-    # (/bin/ls -> /usr/bin/ls).
-    while read -r file; do
-        case $file in */) continue; esac
-
-        # Use $CPT_ROOT in filename so that we follow its symlinks.
-        file=$CPT_ROOT/${file#/}
-
-        # We will only follow the symlinks of the directories, so we
-        # reserve the directory name in this 'dirname' value. cpt-readlink
-        # functions in a similar fashion to 'readlink -f', it makes sure
-        # every component except for the first one to be available on
-        # the directory structure. If we cannot find it in the system,
-        # we don't need to make this much more complex by trying so
-        # hard to find it. Simply use the original directory name.
-        dirname="$(cpt-readlink "${file%/*}" 2>/dev/null)" ||
-            dirname="${file%/*}"
-
-
-        # Combine the dirname and file values, and print them into the
-        # temporary manifest to be parsed.
-        printf '%s/%s\n' "${dirname#$CPT_ROOT}" "${file##*/}"
-
-    done < "$tar_dir/$1/$pkg_db/$1/manifest" > "$CPT_TMPDIR/$pid-m"
-
-    p_name=$1
-
-    # Generate a list of all installed package manifests
-    # and remove the current package from the list.
-    # shellcheck disable=2046,2086
-    set -- $(set +f; pop "$sys_db/$p_name/manifest" from "$sys_db"/*/manifest)
-
-    [ -s "$CPT_TMPDIR/$pid-m" ] || return 0
-
-    # In rare cases where the system only has one package installed
-    # and you are reinstalling that package, grep will try to read from
-    # standard input if we continue here.
-    #
-    # Also, if we don't have any packages installed grep will give an
-    # error. This will not cause the installation to fail, but we don't
-    # need to check for conflicts if that's the case anyway. If we have
-    # only zero packages or one package, just stop wasting time and continue
-    # with the installation.
-    [ "$1" ] && [ -f "$1" ] || return 0
-
-    # Store the list of found conflicts in a file as we will be using the
-    # information multiple times. Storing it in the cache dir allows us
-    # to be lazy as they'll be automatically removed on script end.
-    "$grep" -Fxf "$CPT_TMPDIR/$pid-m" -- "$@" > "$CPT_TMPDIR/$pid-c" ||:
-
-
-    # Enable alternatives automatically if it is safe to do so.
-    # This checks to see that the package that is about to be installed
-    # doesn't overwrite anything it shouldn't in '/var/db/cpt/installed'.
-    "$grep" -q ":/var/db/cpt/installed/" "$CPT_TMPDIR/$pid-c" || choice_auto=1
-
-    # Use 'grep' to list matching lines between the to
-    # be installed package's manifest and the above filtered
-    # list.
-    if [ "$CPT_CHOICE" != 0 ] && [ "$choice_auto" = 1 ]; then
-
-        # This is a novel way of offering an "alternatives" system.
-        # It is entirely dynamic and all "choices" are created and
-        # destroyed on the fly.
-        #
-        # When a conflict is found between two packages, the file
-        # is moved to a directory called "choices" and its name
-        # changed to store its parent package and its intended
-        # location.
-        #
-        # The package's manifest is then updated to reflect this
-        # new location.
-        #
-        # The 'cpt choices' command parses this directory and
-        # offers you the CHOICE of *swapping* entries in this
-        # directory for those on the filesystem.
-        #
-        # The choices command does the same thing we do here,
-        # it rewrites manifests and moves files around to make
-        # this work.
-        #
-        # Pretty nifty huh?
-        while IFS=: read -r _ con; do
-            printf '%s\n' "Found conflict $con"
-
-            # Create the "choices" directory inside of the tarball.
-            # This directory will store the conflicting file.
-            mkdir -p "$tar_dir/$p_name/${cho_dir:=var/db/cpt/choices}"
-
-            # Construct the file name of the "db" entry of the
-            # conflicting file. (pkg_name>usr>bin>ls)
-            con_name=$(printf %s "$con" | sed 's|/|>|g')
-
-            # Move the conflicting file to the choices directory
-            # and name it according to the format above.
-            mv -f "$tar_dir/$p_name/$con" \
-                  "$tar_dir/$p_name/$cho_dir/$p_name$con_name" 2>/dev/null || {
-                log "File must be in ${con%/*} and not a symlink to it"
-                log "This usually occurs when a binary is installed to"
-                log "/sbin instead of /usr/bin (example)"
-                log "Before this package can be used as an alternative,"
-                log "this must be fixed in $p_name. Contact the maintainer"
-                die "by checking 'git log' or by running 'cpt-maintainer'"
-            }
-        done < "$CPT_TMPDIR/$pid-c"
-
-        # Rewrite the package's manifest to update its location
-        # to its new spot (and name) in the choices directory.
-        pkg_manifest "$p_name" "$tar_dir" 2>/dev/null
-
-    elif [ -s "$CPT_TMPDIR/$pid-c" ]; then
-        log "Package '$p_name' conflicts with another package" "" "!>"
-        log "Run 'CPT_CHOICE=1 cpt i $p_name' to add conflicts" "" "!>"
-        die "as alternatives."
-    fi
-}
-
-pkg_swap() {
-    # Swap between package alternatives.
-    pkg_list "$1" >/dev/null
-
-    alt=$(printf %s "$1$2" | sed 's|/|>|g')
-    cd "$sys_db/../choices"
-
-    [ -f "$alt" ] || [ -h "$alt" ] ||
-        die "Alternative '$1 $2' doesn't exist"
-
-    if [ -f "$2" ]; then
-        # Figure out which package owns the file we are going to swap for
-        # another package's.
-        #
-        # Print the full path to the manifest file which contains
-        # the match to our search.
-        pkg_owns=$(set +f; "$grep" -lFx "$2" "$sys_db/"*/manifest) ||:
-
-        # Extract the package name from the path above.
-        pkg_owns=${pkg_owns%/*}
-        pkg_owns=${pkg_owns##*/}
-
-        [ "$pkg_owns" ] ||
-            die "File '$2' exists on filesystem but isn't owned"
-
-        log "Swapping '$2' from '$pkg_owns' to '$1'"
-
-        # Convert the current owner to an alternative and rewrite
-        # its manifest file to reflect this. We then resort this file
-        # so no issues arise when removing packages.
-        cp  -Pf "$CPT_ROOT/$2" "$pkg_owns>${alt#*>}"
-        sed "s#^$(regesc "$2")#${PWD#$CPT_ROOT}/$pkg_owns>${alt#*>}#" \
-            "../installed/$pkg_owns/manifest" |
-            sort -r -o "../installed/$pkg_owns/manifest"
-    fi
-
-    # Convert the desired alternative to a real file and rewrite
-    # the manifest file to reflect this. The reverse of above.
-    mv -f "$alt" "$CPT_ROOT/$2"
-    sed "s#^${PWD#$CPT_ROOT}/$(regesc "$alt")#$2#" "../installed/$1/manifest" |
-        sort -r -o "../installed/$1/manifest"
-}
-
-pkg_etc() {
-    [ -d "$tar_dir/$pkg_name/etc" ] || return 0
-
-    (cd "$tar_dir/$pkg_name"
-
-    # Create all directories beforehand.
-    find etc -type d | while read -r dir; do
-        mkdir -p "$CPT_ROOT/$dir"
-    done
-
-    # Handle files in /etc/ based on a 3-way checksum check.
-    find etc ! -type d | while read -r file; do
-        { sum_new=$(sh256 "$file")
-          sum_sys=$(cd "$CPT_ROOT/"; sh256 "$file")
-          sum_old=$("$grep" "$file$" "$mak_dir/c"); } 2>/dev/null ||:
-
-        log "$pkg_name" "Doing 3-way handshake for $file"
-        printf '%s\n' "Previous: ${sum_old:-null}"
-        printf '%s\n' "System:   ${sum_sys:-null}"
-        printf '%s\n' "New:      ${sum_new:-null}"
-
-        # Use a case statement to easily compare three strings at
-        # the same time. Pretty nifty.
-        case ${sum_old:-null}${sum_sys:-null}${sum_new} in
-            # old = Y, sys = X, new = Y
-            "${sum_new}${sum_sys}${sum_old}")
-                log "Skipping $file"
-                continue
-            ;;
-
-            # old = X, sys = X, new = X
-            # old = X, sys = Y, new = Y
-            # old = X, sys = X, new = Y
-            "${sum_old}${sum_old}${sum_old}"|\
-            "${sum_old:-null}${sum_sys}${sum_sys}"|\
-            "${sum_sys}${sum_old}"*)
-                log "Installing $file"
-                new=
-            ;;
-
-            # All other cases.
-            *)
-                warn "($pkg_name) saving /$file as /$file.new" "->"
-                new=.new
-            ;;
-        esac
-
-        cp -fPp "$file"  "$CPT_ROOT/${file}${new}"
-        chown root:root "$CPT_ROOT/${file}${new}" 2>/dev/null
-    done) ||:
-}
-
-pkg_remove() {
-    # Remove a package and all of its files. The '/etc' directory
-    # is handled differently and configuration files are *not*
-    # overwritten.
-    pkg_list "$1" >/dev/null || return
-
-    # Make sure that nothing depends on this package.
-    [ "$CPT_FORCE" = 1 ] || {
-        log "$1" "Checking for reverse dependencies"
-
-        (cd "$sys_db"; set +f; grep -lFx "$1" -- */depends) &&
-            die "$1" "Can't remove package, others depend on it"
-    }
-    # Block being able to abort the script with 'Ctrl+C' during removal.
-    # Removes all risk of the user aborting a package removal leaving
-    # an incomplete package installed.
-    trap '' INT
-
-    if [ -x "$sys_db/$1/pre-remove" ]; then
-        log "$1" "Running pre-remove script"
-        "$sys_db/$1/pre-remove" ||:
-    fi
-
-    # Create a temporary list of all directories, so we don't accidentally
-    # remove anything from packages that create empty directories for a
-    # purpose (such as baselayout).
-    manifest_list="$(set +f; pop "$sys_db/$1/manifest" from "$sys_db/"*/manifest)"
-    # shellcheck disable=2086
-    [ "$manifest_list" ] && grep -h '/$' $manifest_list | sort -ur > "$mak_dir/dirs"
-
-    run_hook pre-remove "$1" "$sys_db/$1" root
-
-    while read -r file; do
-        # The file is in '/etc' skip it. This prevents the package
-        # manager from removing user edited configuration files.
-        [ "${file##/etc/*}" ] || continue
-
-        if [ -d "$CPT_ROOT/$file" ]; then
-            "$grep" -Fxq "$file" "$mak_dir/dirs" 2>/dev/null && continue
-            rmdir "$CPT_ROOT/$file" 2>/dev/null || continue
-        else
-            rm -f "$CPT_ROOT/$file"
-        fi
-    done < "$sys_db/$1/manifest"
-
-    # Reset 'trap' to its original value. Removal is done so
-    # we no longer need to block 'Ctrl+C'.
-    trap pkg_clean EXIT INT
-
-    run_hook post-remove "$1" "$CPT_ROOT/" root
-
-    log "$1" "Removed successfully"
-}
-
-pkg_install() {
-    # Install a built package tarball.
-
-    # Install can also take the full path to a tarball.
-    # We don't need to check the repository if this is the case.
-    if [ -f "$1" ] && [ -z "${1%%*.tar*}" ] ; then
-        tar_file=$1
-        pkg_name=${1##*/}
-        pkg_name=${pkg_name%#*}
-
-    else
-        pkg_cache "$1" ||
-            die "package has not been built, run 'cpt b pkg'"
-
-        pkg_name=$1
-    fi
-
-    mkdir -p "$tar_dir/$pkg_name"
-    log "$pkg_name" "Extracting $tar_file"
-
-    # Extract the tarball to catch any errors before installation begins.
-    decompress "$tar_file" | "$tar" xf - -C "$tar_dir/$pkg_name"
-
-    [ -f "$tar_dir/$pkg_name/$pkg_db/$pkg_name/manifest" ] ||
-        die "'${tar_file##*/}' is not a valid CPT package"
-
-    # Ensure that the tarball's manifest is correct by checking that
-    # each file and directory inside of it actually exists.
-    [ "$CPT_FORCE" != 1 ] && log "$pkg_name" "Checking package manifest" &&
-        while read -r line; do
-            # Skip symbolic links
-            [ -h "$tar_dir/$pkg_name/$line" ] ||
-            [ -e "$tar_dir/$pkg_name/$line" ] || {
-        log "File $line missing from tarball but mentioned in manifest" "" "!>"
-        TARBALL_FAIL=1
-        }
-    done < "$tar_dir/$pkg_name/$pkg_db/$pkg_name/manifest"
-    [ "$TARBALL_FAIL" ] && {
-        log "You can still install this package by setting CPT_FORCE variable"
-        die "$pkg_name" "Missing files in manifest"
-    }
-
-    log "$pkg_name" "Checking that all dependencies are installed"
-
-    # Make sure that all run-time dependencies are installed prior to
-    # installing the package.
-    [ -f "$tar_dir/$pkg_name/$pkg_db/$pkg_name/depends" ] &&
-    [ "$CPT_FORCE" != 1 ] &&
-        while read -r dep dep_type || [ "$dep" ]; do
-            [ "${dep##\#*}" ] || continue
-            [ "$dep_type" ]   || pkg_list "$dep" >/dev/null ||
-                install_dep="$install_dep'$dep', "
-        done < "$tar_dir/$pkg_name/$pkg_db/$pkg_name/depends"
-
-    [ "$install_dep" ] && die "$1" "Package requires ${install_dep%, }"
-
-    run_hook pre-install "$pkg_name" "$tar_dir/$pkg_name" root
-
-    pkg_conflicts "$pkg_name"
-
-    log "$pkg_name" "Installing package incrementally"
-
-    # Block being able to abort the script with Ctrl+C during installation.
-    # Removes all risk of the user aborting a package installation leaving
-    # an incomplete package installed.
-    trap '' INT
-
-    # If the package is already installed (and this is an upgrade) make a
-    # backup of the manifest and etcsums files.
-    cp -f "$sys_db/$pkg_name/manifest" "$mak_dir/m" 2>/dev/null ||:
-    cp -f "$sys_db/$pkg_name/etcsums"  "$mak_dir/c" 2>/dev/null ||:
-
-    # This is repeated multiple times. Better to make it a function.
-    pkg_rsync() {
-        rsync "--chown=$USER:$USER" --chmod=Du-s,Dg-s,Do-s \
-              -WhHKa --no-compress --exclude /etc "${1:---}" \
-              "$tar_dir/$pkg_name/" "$CPT_ROOT/"
-    }
-
-    # Install the package by using 'rsync' and overwrite any existing files
-    # (excluding '/etc/').
-    pkg_rsync --info=progress2
-    pkg_etc
-
-    # Remove any leftover files if this is an upgrade.
-    "$grep" -vFxf "$sys_db/$pkg_name/manifest" "$mak_dir/m" 2>/dev/null |
-
-    while read -r file; do
-        file=$CPT_ROOT/$file
-
-        # Skip deleting some leftover files.
-        case $file in /etc/*) continue; esac
-
-        # Remove files.
-        if [ -f "$file" ] && [ ! -L "$file" ]; then
-            rm -f "$file"
-
-        # Remove file symlinks.
-        elif [ -h "$file" ] && [ ! -d "$file" ]; then
-            unlink "$file" ||:
-
-        # Skip directory symlinks.
-        elif [ -h "$file" ] && [ -d "$file" ]; then :
-
-        # Remove directories if empty.
-        elif [ -d "$file" ]; then
-            rmdir "$file" 2>/dev/null ||:
-        fi
-    done ||:
-
-    log "$pkg_name" "Verifying installation"
-    { pkg_rsync; pkg_rsync; } ||:
-
-    # Reset 'trap' to its original value. Installation is done so
-    # we no longer need to block 'Ctrl+C'.
-    trap pkg_clean EXIT INT
-
-    if [ -x "$sys_db/$pkg_name/post-install" ]; then
-        log "$pkg_name" "Running post-install script"
-        "$sys_db/$pkg_name/post-install" ||:
-    fi
-
-    run_hook post-install "$pkg_name" "$sys_db/$pkg_name" root
-
-    log "$pkg_name" "Installed successfully"
-}
-
-pkg_fetch() {
-    log "Updating repositories"
-
-    run_hook pre-fetch
-
-    # Create a list of all repositories.
-    # See [1] at top of script.
-    # shellcheck disable=2046,2086
-    { IFS=:; set -- $CPT_PATH; unset IFS; }
-
-    # Update each repository in '$CPT_PATH'. It is assumed that
-    # each repository is 'git' tracked.
-    for repo do
-        # Go to the root of the repository (if it exists).
-        cd "$repo"
-        cd "$(git rev-parse --show-toplevel 2>/dev/null)" 2>/dev/null ||:
-
-        if [ -d .git ]; then
-
-            command -v git >/dev/null || {
-                log "$repo" " "
-                printf '%s\n' "Git is not installed, skipping."
-                continue
-            }
-
-            [ "$(git remote 2>/dev/null)" ] || {
-                log "$repo" " "
-                printf '%s\n' "No remote, skipping."
-                continue
-            }
-
-            contains "$repos" "$PWD" || {
-                repos="$repos $PWD "
-
-                # Display a tick if signing is enabled for this
-                # repository.
-                case $(git config merge.verifySignatures) in
-                    true) log "$PWD" "[signed ✓] " ;;
-                    *)    log "$PWD" " " ;;
-                esac
-
-                if [ -w "$PWD" ] && [ "$uid" != 0 ]; then
-                    git fetch
-                    git merge
-                    git submodule update --remote --init -f
-
-                else
-                    [ "$uid" = 0 ] || log "$PWD" "Need root to update"
-
-                    # Find out the owner of the repository and spawn
-                    # git as this user below.
-                    #
-                    # This prevents 'git' from changing the original
-                    # ownership of files and directories in the rare
-                    # case that the repository is owned by a 3rd user.
-                    (
-                        user=$(cpt-stat "$PWD")      || user=root
-                        id -u "$user" >/dev/null 2>&1 || user=root
-
-                        [ "$user" = root ] ||
-                            log "Dropping permissions to $user for pull"
-
-                        git_cmd="git fetch && git merge && git submodule update --remote --init -f"
-                        case $su in *su) git_cmd="'$git_cmd'"; esac
-
-                        # Spawn a subshell to run multiple commands as
-                        # root at once. This makes things easier on users
-                        # who aren't using persist/timestamps for auth
-                        # caching.
-                        user=$user as_root sh -c "$git_cmd"
-                    )
-                fi
-            }
-        elif [ -f .rsync ]; then
-            read -r remote < .rsync
-            if [ -w "$PWD" ] && [ "$uid" != 0 ]; then
-                rsync -acvzzC --include=core --delete "$remote/" "$PWD"
-            else
-                [ "$uid" = 0 ] || log "$PWD" "Need root to update"
-
-                # Similar to the git update, we find the owner of
-                # the repository and spawn rsync as that user.
-                (
-                    user=$(cpt-stat "$PWD")      || user=root
-                    id -u "$user" >/dev/null 2>&1 || user=root
-
-                    [ "$user" = root ] ||
-                        log "Dropping permissions to $user for pull"
-
-                    user=$user as_root rsync -acvzzC --include=core --delete "$remote/" "$PWD"
-                )
-            fi
-        else
-            log "$repo" " "
-            printf '%s\n' "Not a remote repository, skipping."
-        fi
-    done
-
-    run_hook post-fetch
-}
-
-pkg_updates(){
-    # Check all installed packages for updates. So long as the installed
-    # version and the version in the repositories differ, it's considered
-    # an update.
-    [ "$CPT_FETCH" = 0 ] || pkg_fetch
-
-    log "Checking for new package versions"
-
-    set +f
-
-    for pkg in "$sys_db/"*; do
-        pkg_name=${pkg##*/}
-
-        # Read version and release information from the installed packages
-        # and repository.
-        read -r db_ver db_rel < "$pkg/version"
-        read -r re_ver re_rel < "$(pkg_find "$pkg_name")/version"
-
-        # Compare installed packages to repository packages.
-        [ "$db_ver-$db_rel" != "$re_ver-$re_rel" ] && {
-            printf '%s\n' "$pkg_name $db_ver-$db_rel ==> $re_ver-$re_rel"
-            outdated="$outdated$pkg_name "
-        }
-    done
-
-    set -f
-
-    # If the download option is specified only download the outdated packages
-    # and exit.
-    [ "$download_only" = 1 ] && {
-        log "Only sources for the packages will be acquired"
-        prompt || exit 0
-
-        for pkg in $outdated; do
-            pkg_sources "$pkg"
-        done
-
-        exit 0
-    }
-
-    contains "$outdated" cpt && {
-        log "Detected package manager update"
-        log "The package manager will be updated first"
-
-        prompt || exit 0
-
-        pkg_build cpt
-        cpt-install cpt
-
-        log "Updated the package manager"
-        log "Re-run 'cpt update' to update your system"
-
-        exit 0
-    }
-
-    [ "$outdated" ] || {
-        log "Everything is up to date"
-        return
-    }
-
-    log "Packages to update: ${outdated% }"
-
-    # Tell 'pkg_build' to always prompt before build.
-    pkg_update=1
-
-    # Build all packages requiring an update.
-    # See [1] at top of script.
-    # shellcheck disable=2046,2086
-    {
-        pkg_order $outdated
-        pkg_build $order
-    }
-
-    log "Updated all packages"
-}
-
-pkg_clean() {
-    # Clean up on exit or error. This removes everything related
-    # to the build.
-    [ "$CPT_DEBUG" != 1 ] || return
-
-    # Block 'Ctrl+C' while cache is being cleaned.
-    trap '' INT
-
-    # Remove temporary items.
-    rm -rf -- "$mak_dir" "$pkg_dir" "$tar_dir" \
-       "$CPT_TMPDIR/$pid-c" "$CPT_TMPDIR/$pid-m"
-}
-
-main() {
-    set -ef
-
-    # Die here if the user has no set CPT_PATH. This is a rare occurance
-    # as the environment variable should always be defined.
-    [ "$CPT_PATH" ] || die "\$CPT_PATH needs to be set"
-
-    # Set the location to the repository and package database.
-    pkg_db=var/db/cpt/installed
-
-    # The PID of the current shell process is used to isolate directories
-    # to each specific CPT instance. This allows multiple package manager
-    # instances to be run at once. Store the value in another variable so
-    # that it doesn't change beneath us.
-    pid=${CPT_PID:-$$}
-
-    # Force the C locale to speed up things like 'grep' which disable unicode
-    # etc when this is set. We don't need unicode and a speed up is always
-    # welcome.
-    export LC_ALL=C LANG=C
-
-    # Catch errors and ensure that build files and directories are cleaned
-    # up before we die. This occurs on 'Ctrl+C' as well as success and error.
-    trap pkg_clean EXIT INT
-
-    # Prefer GNU grep if installed as it is much much faster than busybox's
-    # implementation. Very much worth it if you value performance over
-    # POSIX correctness (grep quoted to avoid shellcheck false-positive).
-    grep=$(command -v ggrep) || grep='grep'
-
-    # Prefer libarchive tar or GNU tar if installed as they are  much
-    # much faster than busybox's implementation. Very much worth it if
-    # you value performance.
-    tar=$(command -v bsdtar || command -v gtar) || tar=tar
-
-    # Figure out which 'sudo' command to use based on the user's choice or
-    # what is available on the system.
-    su=${CPT_SU:-$(command -v sudo || command -v doas)} || su=su
-
-    # Store the date and time of script invocation to be used as the name
-    # of the log files the package manager creates uring builds.
-    time=$(date '+%Y-%m-%d-%H:%M')
-
-    # Make note of the user's current ID to do root checks later on.
-    # This is used enough to warrant a place here.
-    uid=$(id -u)
-
-    # Make sure that the CPT_ROOT doesn't end with a '/'. This might
-    # break some operations.
-    [ -z "$CPT_ROOT" ] || [ "${CPT_ROOT##*/}" ] || {
-        warn "Your CPT_ROOT variable shouldn't end with '/'"
-        CPT_ROOT=${CPT_ROOT%/}
-    }
-
-    # Define an optional sys_arch variable in order to provide
-    # information to build files with architectural information.
-    sys_arch=$(uname -m 2>/dev/null) ||:
-
-    # Define this variable but don't create its directory structure from
-    # the get go. It will be created as needed by package installation.
-    sys_db=$CPT_ROOT/$pkg_db
-
-    # This allows for automatic setup of a CPT chroot and will
-    # do nothing on a normal system.
-    mkdir -p "$CPT_ROOT/" 2>/dev/null ||:
-
-    # Set a value for CPT_COMPRESS if it isn't set.
-    : "${CPT_COMPRESS:=gz}"
-
-    # A temporary directory can be specified apart from the cache
-    # directory in order to build in a user specified directory.
-    # /tmp could be used in order to build on ram, useful on SSDs.
-    # The user can specify CPT_TMPDIR for this.
-    #
-    # Create the required temporary directories and set the variables
-    # which point to them.
-    mkdir -p "${cac_dir:=${CPT_CACHE:=${XDG_CACHE_HOME:-$HOME/.cache}/cpt}}" \
-             "${CPT_TMPDIR:=$cac_dir}" \
-             "${mak_dir:=$CPT_TMPDIR/build-$pid}" \
-             "${pkg_dir:=$CPT_TMPDIR/pkg-$pid}" \
-             "${tar_dir:=$CPT_TMPDIR/extract-$pid}" \
-             "${src_dir:=$cac_dir/sources}" \
-             "${log_dir:=$cac_dir/logs}" \
-             "${bin_dir:=$cac_dir/bin}"
-
-    # Disable color escape sequences if running in a subshell.
-    # This behaviour can be changed by adding a CPT_COLOR
-    # variable to the environment. If it is set to 1 it will
-    # always enable color escapes, and if set to 0 it will
-    # always disable color escapes.
-    if [ "$CPT_COLOR" = 1 ]; then color=1
-    elif [ "$CPT_COLOR" = 0 ] || ! [ -t 1 ]; then
-        log() { printf '%s %s %s\n' "${3:-->}" "$1" "$2" >&2 ;}
-    else color=1
-    fi
-
-}
-
-main "$@"