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#!/usr/bin/env bash
# Copyright (c) 2016 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "Cygwin configuration files" project.
# For details, see https://github.com/egor-tensin/cygwin-home.
# Distributed under the MIT License.
_os=''
os_detect() {
command -v uname > /dev/null \
&& [ "$( uname -o )" == 'Cygwin' ] \
&& _os='Cygwin' \
&& return 0
[ -r /etc/os-release ] \
&& _os="$( . /etc/os-release && echo "$NAME" )" \
&& return 0
return 1
}
os_detect
os_detected() {
test -n "$_os"
}
os_is_cygwin() {
test "$_os" == 'Cygwin'
}
os_is_ubuntu() {
test "$_os" == 'Ubuntu'
}
os_is_arch() {
test "$_os" == 'Arch Linux'
}
pkg_list_cygwin() (
set -o errexit -o nounset -o pipefail
cygcheck --check-setup --dump-only \
| tail -n +3 \
| cut -d ' ' -f 1
)
setup_pkg_list_ubuntu() (
set -o errexit -o nounset -o pipefail
local -r initial_status='/var/log/installer/initial-status.gz'
gzip --decompress --stdout -- "$initial_status" \
| sed --quiet -- 's/^Package: //p' \
| sort \
| uniq
)
user_pkg_list_ubuntu() (
set -o errexit -o nounset -o pipefail
comm -23 <( apt-mark showmanual | sort | uniq ) \
<( setup_pkg_list_ubuntu )
)
pkg_list_ubuntu() (
set -o errexit -o nounset -o pipefail
dpkg --get-selections \
| grep --invert-match -- 'deinstall$' \
| cut -f 1 \
| cut -d ':' -f 1
)
setup_pkg_list_arch() (
set -o errexit -o nounset -o pipefail
local -ra groups=(base base-devel)
pacman -Q --groups -q -- ${groups[@]+"${groups[@]}"} | sort
)
user_pkg_list_arch() (
set -o errexit -o nounset -o pipefail
comm -23 <( pacman -Q --explicit -q | sort ) \
<( setup_pkg_list_arch )
)
pkg_list_arch() {
pacman -Qq
}
pkg_list() (
set -o errexit -o nounset -o pipefail
if os_is_cygwin; then
pkg_list_cygwin
elif os_is_ubuntu; then
pkg_list_ubuntu
elif os_is_arch; then
pkg_list_arch
else
return 1
fi
)
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