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home-manager: extract inline shell script to file

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Smaug123 2024-04-05 14:05:00 +01:00 committed by Robert Helgesson
parent 782eed8bb6
commit b787726a84
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2 changed files with 59 additions and 51 deletions
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57
modules/files.nix
View File

@ -79,59 +79,14 @@ in
(mapAttrsToList (n: v: v.target)
(filterAttrs (n: v: v.force) cfg));
check = pkgs.writeText "check" ''
${config.lib.bash.initHomeManagerLib}
storeDir = escapeShellArg builtins.storeDir;
# A symbolic link whose target path matches this pattern will be
# considered part of a Home Manager generation.
homeFilePattern="$(readlink -e ${escapeShellArg builtins.storeDir})/*-home-manager-files/*"
check = pkgs.substituteAll {
src = ./files/check-link-targets.sh;
forcedPaths=(${forcedPaths})
newGenFiles="$1"
shift
for sourcePath in "$@" ; do
relativePath="''${sourcePath#$newGenFiles/}"
targetPath="$HOME/$relativePath"
forced=""
for forcedPath in "''${forcedPaths[@]}"; do
if [[ $targetPath == $forcedPath* ]]; then
forced="yeah"
break
fi
done
if [[ -n $forced ]]; then
verboseEcho "Skipping collision check for $targetPath"
elif [[ -e "$targetPath" \
&& ! "$(readlink "$targetPath")" == $homeFilePattern ]] ; then
# The target file already exists and it isn't a symlink owned by Home Manager.
if cmp -s "$sourcePath" "$targetPath"; then
# First compare the files' content. If they're equal, we're fine.
warnEcho "Existing file '$targetPath' is in the way of '$sourcePath', will be skipped since they are the same"
elif [[ ! -L "$targetPath" && -n "$HOME_MANAGER_BACKUP_EXT" ]] ; then
# Next, try to move the file to a backup location if configured and possible
backup="$targetPath.$HOME_MANAGER_BACKUP_EXT"
if [[ -e "$backup" ]]; then
errorEcho "Existing file '$backup' would be clobbered by backing up '$targetPath'"
collision=1
else
warnEcho "Existing file '$targetPath' is in the way of '$sourcePath', will be moved to '$backup'"
fi
else
# Fail if nothing else works
errorEcho "Existing file '$targetPath' is in the way of '$sourcePath'"
collision=1
fi
fi
done
if [[ -v collision ]] ; then
errorEcho "Please move the above files and try again or use 'home-manager switch -b backup' to back up existing files automatically."
exit 1
fi
'';
inherit (config.lib.bash) initHomeManagerLib;
inherit forcedPaths storeDir;
};
in
''
function checkNewGenCollision() {

53
modules/files/check-link-targets.sh Normal file
View File

@ -0,0 +1,53 @@
# -*- mode: sh; sh-shell: bash -*-
@initHomeManagerLib@
# A symbolic link whose target path matches this pattern will be
# considered part of a Home Manager generation.
homeFilePattern="$(readlink -e @storeDir@)/*-home-manager-files/*"
forcedPaths=(@forcedPaths@)
newGenFiles="$1"
shift
for sourcePath in "$@" ; do
relativePath="${sourcePath#$newGenFiles/}"
targetPath="$HOME/$relativePath"
forced=""
for forcedPath in "${forcedPaths[@]}"; do
if [[ $targetPath == $forcedPath* ]]; then
forced="yeah"
break
fi
done
if [[ -n $forced ]]; then
verboseEcho "Skipping collision check for $targetPath"
elif [[ -e "$targetPath" \
&& ! "$(readlink "$targetPath")" == $homeFilePattern ]] ; then
# The target file already exists and it isn't a symlink owned by Home Manager.
if cmp -s "$sourcePath" "$targetPath"; then
# First compare the files' content. If they're equal, we're fine.
warnEcho "Existing file '$targetPath' is in the way of '$sourcePath', will be skipped since they are the same"
elif [[ ! -L "$targetPath" && -n "$HOME_MANAGER_BACKUP_EXT" ]] ; then
# Next, try to move the file to a backup location if configured and possible
backup="$targetPath.$HOME_MANAGER_BACKUP_EXT"
if [[ -e "$backup" ]]; then
errorEcho "Existing file '$backup' would be clobbered by backing up '$targetPath'"
collision=1
else
warnEcho "Existing file '$targetPath' is in the way of '$sourcePath', will be moved to '$backup'"
fi
else
# Fail if nothing else works
errorEcho "Existing file '$targetPath' is in the way of '$sourcePath'"
collision=1
fi
fi
done
if [[ -v collision ]] ; then
errorEcho "Please move the above files and try again or use 'home-manager switch -b backup' to back up existing files automatically."
exit 1
fi