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home-manager: add uninstall command

This commit is contained in:
Robert Helgesson 2019-04-28 00:33:41 +02:00
parent c94eaa0e6c
commit 3bb7c75db3
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GPG key ID: 36BDAA14C2797E89

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@ -10,6 +10,20 @@ function errorEcho() {
echo $* >&2
}
function setVerboseAndDryRun() {
if [[ -v VERBOSE ]]; then
export VERBOSE_ARG="--verbose"
else
export VERBOSE_ARG=""
fi
if [[ -v DRY_RUN ]] ; then
export DRY_RUN_CMD=echo
else
export DRY_RUN_CMD=""
fi
}
function setWorkDir() {
if [[ ! -v WORK_DIR ]]; then
WORK_DIR="$(mktemp --tmpdir -d home-manager-build.XXXXXXXXXX)"
@ -216,17 +230,7 @@ function doListGens() {
# Removes linked generations. Takes as arguments identifiers of
# generations to remove.
function doRmGenerations() {
if [[ -v VERBOSE ]]; then
export VERBOSE_ARG="--verbose"
else
export VERBOSE_ARG=""
fi
if [[ -v DRY_RUN ]] ; then
export DRY_RUN_CMD=echo
else
export DRY_RUN_CMD=""
fi
setVerboseAndDryRun
pushd "/nix/var/nix/profiles/per-user/$USER" > /dev/null
@ -246,6 +250,11 @@ function doRmGenerations() {
popd > /dev/null
}
function doRmAllGenerations() {
$DRY_RUN_CMD rm $VERBOSE_ARG \
"/nix/var/nix/profiles/per-user/$USER/home-manager"*
}
function doExpireGenerations() {
local profileDir="/nix/var/nix/profiles/per-user/$USER"
@ -347,6 +356,56 @@ function doShowNews() {
fi
}
function doUninstall() {
setVerboseAndDryRun
echo "This will remove Home Manager from your system."
if [[ -v DRY_RUN ]]; then
echo "This is a dry run, nothing will actually be uninstalled."
fi
local confirmation
read -r -n 1 -p "Really uninstall Home Manager? [y/n] " confirmation
echo
case $confirmation in
y|Y)
echo "Switching to empty Home Manager configuration..."
HOME_MANAGER_CONFIG="$(mktemp --tmpdir home-manager.XXXXXXXXXX)"
echo "{}" > "$HOME_MANAGER_CONFIG"
doSwitch
rm "$HOME_MANAGER_CONFIG"
$DRY_RUN_CMD rm $VERBOSE_ARG -r \
"${XDG_DATA_HOME:-$HOME/.local/share}/home-manager"
$DRY_RUN_CMD rm $VERBOSE_ARG \
"/nix/var/nix/gcroots/per-user/$USER/current-home"
;;
*)
echo "Yay!"
exit 0
;;
esac
local deleteProfiles
read -r -n 1 \
-p 'Remove all Home Manager generations? [y/n] ' \
deleteProfiles
echo
case $deleteProfiles in
y|Y)
doRmAllGenerations
echo "All generations are now eligible for garbage collection."
;;
*)
echo "Leaving generations but they may still be garbage collected."
;;
esac
echo "Home Manager is uninstalled but your home.nix is left untouched."
}
function doHelp() {
echo "Usage: $0 [OPTION] COMMAND"
echo
@ -385,6 +444,8 @@ function doHelp() {
echo " packages List all packages installed in home-manager-path"
echo
echo " news Show news entries in a pager"
echo
echo " uninstall Remove Home Manager"
}
EXTRA_NIX_PATH=()
@ -466,6 +527,9 @@ case "$cmd" in
news)
doShowNews --all
;;
uninstall)
doUninstall
;;
help|--help)
doHelp
;;