2017-10-05 19:38:46 +00:00
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{ pkgs, config, lib, ... }:
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with lib;
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let
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2023-01-25 21:58:35 +00:00
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cfg = filterAttrs (n: f: f.enable) config.home.file;
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2017-11-06 09:28:42 +00:00
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2017-10-05 22:19:03 +00:00
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homeDirectory = config.home.homeDirectory;
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2017-10-05 19:38:46 +00:00
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2017-11-06 09:28:54 +00:00
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fileType = (import lib/file-type.nix {
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inherit homeDirectory lib pkgs;
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}).fileType;
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2017-11-06 09:28:42 +00:00
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2019-01-16 01:14:14 +00:00
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sourceStorePath = file:
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let
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sourcePath = toString file.source;
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sourceName = config.lib.strings.storeFileName (baseNameOf sourcePath);
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in
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if builtins.hasContext sourcePath
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then file.source
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else builtins.path { path = file.source; name = sourceName; };
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2017-10-05 19:38:46 +00:00
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in
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{
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options = {
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home.file = mkOption {
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2023-06-30 23:30:13 +00:00
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description = lib.mdDoc "Attribute set of files to link into the user home.";
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2017-10-05 19:38:46 +00:00
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default = {};
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2023-06-30 05:22:38 +00:00
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type = fileType "home.file" "{env}`HOME`" homeDirectory;
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2017-10-05 19:38:46 +00:00
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};
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home-files = mkOption {
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type = types.package;
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internal = true;
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2023-06-30 23:30:13 +00:00
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description = lib.mdDoc "Package to contain all home files";
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2017-10-05 19:38:46 +00:00
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};
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};
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config = {
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2021-06-27 14:42:45 +00:00
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assertions = [(
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let
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dups =
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attrNames
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(filterAttrs (n: v: v > 1)
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(foldAttrs (acc: v: acc + v) 0
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(mapAttrsToList (n: v: { ${v.target} = 1; }) cfg)));
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dupsStr = concatStringsSep ", " dups;
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in {
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assertion = dups == [];
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message = ''
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Conflicting managed target files: ${dupsStr}
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This may happen, for example, if you have a configuration similar to
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home.file = {
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conflict1 = { source = ./foo.nix; target = "baz"; };
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conflict2 = { source = ./bar.nix; target = "baz"; };
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}'';
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})
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];
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2020-05-01 23:06:41 +00:00
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lib.file.mkOutOfStoreSymlink = path:
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let
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pathStr = toString path;
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name = hm.strings.storeFileName (baseNameOf pathStr);
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in
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pkgs.runCommandLocal name {} ''ln -s ${escapeShellArg pathStr} $out'';
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2017-10-05 19:38:46 +00:00
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# This verifies that the links we are about to create will not
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# overwrite an existing file.
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2020-01-16 22:41:14 +00:00
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home.activation.checkLinkTargets = hm.dag.entryBefore ["writeBoundary"] (
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2017-10-05 19:38:46 +00:00
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let
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2020-03-17 21:27:29 +00:00
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# Paths that should be forcibly overwritten by Home Manager.
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# Caveat emptor!
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forcedPaths =
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2019-10-29 02:29:12 +00:00
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concatMapStringsSep " " (p: ''"$HOME"/${escapeShellArg p}'')
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2020-03-17 21:27:29 +00:00
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(mapAttrsToList (n: v: v.target)
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(filterAttrs (n: v: v.force) cfg));
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2017-10-05 19:38:46 +00:00
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check = pkgs.writeText "check" ''
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2021-04-29 23:29:39 +00:00
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${config.lib.bash.initHomeManagerLib}
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2017-10-05 19:38:46 +00:00
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2019-11-25 09:54:27 +00:00
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# A symbolic link whose target path matches this pattern will be
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# considered part of a Home Manager generation.
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2019-10-29 02:29:12 +00:00
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homeFilePattern="$(readlink -e ${escapeShellArg builtins.storeDir})/*-home-manager-files/*"
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2019-11-25 09:54:27 +00:00
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2020-03-17 21:27:29 +00:00
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forcedPaths=(${forcedPaths})
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2017-10-05 19:38:46 +00:00
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newGenFiles="$1"
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shift
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for sourcePath in "$@" ; do
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relativePath="''${sourcePath#$newGenFiles/}"
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targetPath="$HOME/$relativePath"
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2020-03-17 21:27:29 +00:00
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forced=""
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for forcedPath in "''${forcedPaths[@]}"; do
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if [[ $targetPath == $forcedPath* ]]; then
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forced="yeah"
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break
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fi
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done
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if [[ -n $forced ]]; then
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$VERBOSE_ECHO "Skipping collision check for $targetPath"
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elif [[ -e "$targetPath" \
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2019-11-25 09:54:27 +00:00
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&& ! "$(readlink "$targetPath")" == $homeFilePattern ]] ; then
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2020-05-19 12:44:44 +00:00
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# The target file already exists and it isn't a symlink owned by Home Manager.
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2021-10-30 07:30:41 +00:00
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if cmp -s "$sourcePath" "$targetPath"; then
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2020-05-19 12:44:44 +00:00
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# First compare the files' content. If they're equal, we're fine.
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warnEcho "Existing file '$targetPath' is in the way of '$sourcePath', will be skipped since they are the same"
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elif [[ ! -L "$targetPath" && -n "$HOME_MANAGER_BACKUP_EXT" ]] ; then
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# Next, try to move the file to a backup location if configured and possible
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2019-04-17 19:15:38 +00:00
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backup="$targetPath.$HOME_MANAGER_BACKUP_EXT"
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if [[ -e "$backup" ]]; then
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errorEcho "Existing file '$backup' would be clobbered by backing up '$targetPath'"
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collision=1
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else
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2020-05-14 14:02:31 +00:00
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warnEcho "Existing file '$targetPath' is in the way of '$sourcePath', will be moved to '$backup'"
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2019-04-17 19:15:38 +00:00
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fi
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else
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2020-05-19 12:44:44 +00:00
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# Fail if nothing else works
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2020-05-14 14:02:31 +00:00
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errorEcho "Existing file '$targetPath' is in the way of '$sourcePath'"
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2019-04-17 19:15:38 +00:00
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collision=1
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fi
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2017-10-05 19:38:46 +00:00
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fi
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done
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if [[ -v collision ]] ; then
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2021-08-21 23:28:02 +00:00
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errorEcho "Please move the above files and try again or use 'home-manager switch -b backup' to back up existing files automatically."
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2017-10-05 19:38:46 +00:00
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exit 1
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fi
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'';
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in
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''
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function checkNewGenCollision() {
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local newGenFiles
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newGenFiles="$(readlink -e "$newGenPath/home-files")"
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2019-04-30 12:52:44 +00:00
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find "$newGenFiles" \( -type f -or -type l \) \
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2019-04-27 11:48:57 +00:00
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-exec bash ${check} "$newGenFiles" {} +
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2017-10-05 19:38:46 +00:00
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}
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checkNewGenCollision || exit 1
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''
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);
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2017-11-15 17:12:40 +00:00
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# This activation script will
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#
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# 1. Remove files from the old generation that are not in the new
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# generation.
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#
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# 2. Switch over the Home Manager gcroot and current profile
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# links.
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#
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# 3. Symlink files from the new generation into $HOME.
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#
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# This order is needed to ensure that we always know which links
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# belong to which generation. Specifically, if we're moving from
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# generation A to generation B having sets of home file links FA
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# and FB, respectively then cleaning before linking produces state
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# transitions similar to
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#
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# FA → FA ∩ FB → (FA ∩ FB) ∪ FB = FB
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#
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# and a failure during the intermediate state FA ∩ FB will not
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# result in lost links because this set of links are in both the
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# source and target generation.
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2020-01-16 22:41:14 +00:00
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home.activation.linkGeneration = hm.dag.entryAfter ["writeBoundary"] (
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2017-10-05 19:38:46 +00:00
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let
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2021-06-27 21:31:20 +00:00
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link = pkgs.writeShellScript "link" ''
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2017-10-05 19:38:46 +00:00
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newGenFiles="$1"
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shift
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for sourcePath in "$@" ; do
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relativePath="''${sourcePath#$newGenFiles/}"
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targetPath="$HOME/$relativePath"
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2019-04-17 19:15:38 +00:00
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if [[ -e "$targetPath" && ! -L "$targetPath" && -n "$HOME_MANAGER_BACKUP_EXT" ]] ; then
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2020-05-19 12:44:44 +00:00
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# The target exists, back it up
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2019-04-17 19:15:38 +00:00
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backup="$targetPath.$HOME_MANAGER_BACKUP_EXT"
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$DRY_RUN_CMD mv $VERBOSE_ARG "$targetPath" "$backup" || errorEcho "Moving '$targetPath' failed!"
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fi
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2020-05-19 12:44:44 +00:00
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2021-10-30 07:30:41 +00:00
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if [[ -e "$targetPath" && ! -L "$targetPath" ]] && cmp -s "$sourcePath" "$targetPath" ; then
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2020-05-19 12:44:44 +00:00
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# The target exists but is identical – don't do anything.
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$VERBOSE_ECHO "Skipping '$targetPath' as it is identical to '$sourcePath'"
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else
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# Place that symlink, --force
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2023-01-09 12:00:21 +00:00
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# This can still fail if the target is a directory, in which case we bail out.
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2020-05-19 12:44:44 +00:00
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$DRY_RUN_CMD mkdir -p $VERBOSE_ARG "$(dirname "$targetPath")"
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2023-01-09 12:00:21 +00:00
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$DRY_RUN_CMD ln -Tsf $VERBOSE_ARG "$sourcePath" "$targetPath" || exit 1
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2020-05-19 12:44:44 +00:00
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fi
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2017-10-05 19:38:46 +00:00
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done
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'';
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2021-06-27 21:31:20 +00:00
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cleanup = pkgs.writeShellScript "cleanup" ''
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2021-04-29 23:29:39 +00:00
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${config.lib.bash.initHomeManagerLib}
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2017-10-05 19:38:46 +00:00
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2019-11-25 09:54:27 +00:00
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# A symbolic link whose target path matches this pattern will be
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# considered part of a Home Manager generation.
|
2019-10-29 02:29:12 +00:00
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homeFilePattern="$(readlink -e ${escapeShellArg builtins.storeDir})/*-home-manager-files/*"
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2019-11-25 09:54:27 +00:00
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2017-10-05 19:38:46 +00:00
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newGenFiles="$1"
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2017-11-11 13:16:45 +00:00
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shift 1
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for relativePath in "$@" ; do
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2017-10-05 19:38:46 +00:00
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targetPath="$HOME/$relativePath"
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if [[ -e "$newGenFiles/$relativePath" ]] ; then
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$VERBOSE_ECHO "Checking $targetPath: exists"
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2019-11-25 09:54:27 +00:00
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elif [[ ! "$(readlink "$targetPath")" == $homeFilePattern ]] ; then
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2020-05-17 01:35:05 +00:00
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warnEcho "Path '$targetPath' does not link into a Home Manager generation. Skipping delete."
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2017-10-05 19:38:46 +00:00
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else
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$VERBOSE_ECHO "Checking $targetPath: gone (deleting)"
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$DRY_RUN_CMD rm $VERBOSE_ARG "$targetPath"
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# Recursively delete empty parent directories.
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targetDir="$(dirname "$relativePath")"
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if [[ "$targetDir" != "." ]] ; then
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pushd "$HOME" > /dev/null
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# Call rmdir with a relative path excluding $HOME.
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# Otherwise, it might try to delete $HOME and exit
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# with a permission error.
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$DRY_RUN_CMD rmdir $VERBOSE_ARG \
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-p --ignore-fail-on-non-empty \
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"$targetDir"
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popd > /dev/null
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fi
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fi
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done
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'';
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in
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''
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function linkNewGen() {
|
2021-04-29 23:29:39 +00:00
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_i "Creating home file links in %s" "$HOME"
|
2017-11-15 17:31:04 +00:00
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|
2017-10-05 19:38:46 +00:00
|
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local newGenFiles
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newGenFiles="$(readlink -e "$newGenPath/home-files")"
|
2019-04-30 12:52:44 +00:00
|
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find "$newGenFiles" \( -type f -or -type l \) \
|
2019-04-27 11:48:57 +00:00
|
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|
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-exec bash ${link} "$newGenFiles" {} +
|
2017-10-05 19:38:46 +00:00
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}
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function cleanOldGen() {
|
2022-03-26 14:04:19 +00:00
|
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if [[ ! -v oldGenPath || ! -e "$oldGenPath/home-files" ]] ; then
|
2017-10-05 19:38:46 +00:00
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return
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fi
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|
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|
2021-04-29 23:29:39 +00:00
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_i "Cleaning up orphan links from %s" "$HOME"
|
2017-10-05 19:38:46 +00:00
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local newGenFiles oldGenFiles
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newGenFiles="$(readlink -e "$newGenPath/home-files")"
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oldGenFiles="$(readlink -e "$oldGenPath/home-files")"
|
2017-11-11 13:16:45 +00:00
|
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|
|
# Apply the cleanup script on each leaf in the old
|
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|
# generation. The find command below will print the
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|
|
# relative path of the entry.
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|
|
find "$oldGenFiles" '(' -type f -or -type l ')' -printf '%P\0' \
|
|
|
|
|
| xargs -0 bash ${cleanup} "$newGenFiles"
|
2017-10-05 19:38:46 +00:00
|
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|
}
|
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|
2017-11-15 17:12:40 +00:00
|
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|
cleanOldGen
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|
2017-10-05 19:38:46 +00:00
|
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|
|
if [[ ! -v oldGenPath || "$oldGenPath" != "$newGenPath" ]] ; then
|
2021-11-10 18:23:33 +00:00
|
|
|
|
_i "Creating profile generation %s" $newGenNum
|
|
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|
|
if [[ -e "$genProfilePath"/manifest.json ]] ; then
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|
|
# Remove all packages from "$genProfilePath"
|
|
|
|
|
# `nix profile remove '.*' --profile "$genProfilePath"` was not working, so here is a workaround:
|
|
|
|
|
nix profile list --profile "$genProfilePath" \
|
|
|
|
|
| cut -d ' ' -f 4 \
|
|
|
|
|
| xargs -t $DRY_RUN_CMD nix profile remove $VERBOSE_ARG --profile "$genProfilePath"
|
|
|
|
|
$DRY_RUN_CMD nix profile install $VERBOSE_ARG --profile "$genProfilePath" "$newGenPath"
|
|
|
|
|
else
|
|
|
|
|
$DRY_RUN_CMD nix-env $VERBOSE_ARG --profile "$genProfilePath" --set "$newGenPath"
|
|
|
|
|
fi
|
|
|
|
|
|
2023-03-04 09:39:02 +00:00
|
|
|
|
$DRY_RUN_CMD nix-store --realise "$newGenPath" --add-root "$newGenGcPath" > "$DRY_RUN_NULL"
|
|
|
|
|
if [[ -e "$legacyGenGcPath" ]]; then
|
|
|
|
|
$DRY_RUN_CMD rm $VERBOSE_ARG "$legacyGenGcPath"
|
|
|
|
|
fi
|
2017-10-05 19:38:46 +00:00
|
|
|
|
else
|
2021-04-29 23:29:39 +00:00
|
|
|
|
_i "No change so reusing latest profile generation %s" "$oldGenNum"
|
2017-10-05 19:38:46 +00:00
|
|
|
|
fi
|
|
|
|
|
|
|
|
|
|
linkNewGen
|
|
|
|
|
''
|
|
|
|
|
);
|
|
|
|
|
|
2020-01-16 22:41:14 +00:00
|
|
|
|
home.activation.checkFilesChanged = hm.dag.entryBefore ["linkGeneration"] (
|
2021-06-27 21:31:20 +00:00
|
|
|
|
let
|
|
|
|
|
homeDirArg = escapeShellArg homeDirectory;
|
|
|
|
|
in ''
|
2021-05-20 20:12:45 +00:00
|
|
|
|
function _cmp() {
|
|
|
|
|
if [[ -d $1 && -d $2 ]]; then
|
|
|
|
|
diff -rq "$1" "$2" &> /dev/null
|
|
|
|
|
else
|
|
|
|
|
cmp --quiet "$1" "$2"
|
|
|
|
|
fi
|
|
|
|
|
}
|
2018-02-16 23:32:29 +00:00
|
|
|
|
declare -A changedFiles
|
2021-06-27 21:31:20 +00:00
|
|
|
|
'' + concatMapStrings (v:
|
|
|
|
|
let
|
|
|
|
|
sourceArg = escapeShellArg (sourceStorePath v);
|
|
|
|
|
targetArg = escapeShellArg v.target;
|
|
|
|
|
in ''
|
|
|
|
|
_cmp ${sourceArg} ${homeDirArg}/${targetArg} \
|
|
|
|
|
&& changedFiles[${targetArg}]=0 \
|
|
|
|
|
|| changedFiles[${targetArg}]=1
|
|
|
|
|
'') (filter (v: v.onChange != "") (attrValues cfg))
|
2021-05-20 20:12:45 +00:00
|
|
|
|
+ ''
|
|
|
|
|
unset -f _cmp
|
|
|
|
|
''
|
2018-02-16 23:32:29 +00:00
|
|
|
|
);
|
|
|
|
|
|
2020-01-16 22:41:14 +00:00
|
|
|
|
home.activation.onFilesChange = hm.dag.entryAfter ["linkGeneration"] (
|
2018-02-16 23:32:29 +00:00
|
|
|
|
concatMapStrings (v: ''
|
2021-07-31 22:54:47 +00:00
|
|
|
|
if (( ''${changedFiles[${escapeShellArg v.target}]} == 1 )); then
|
|
|
|
|
if [[ -v DRY_RUN || -v VERBOSE ]]; then
|
|
|
|
|
echo "Running onChange hook for" ${escapeShellArg v.target}
|
|
|
|
|
fi
|
|
|
|
|
if [[ ! -v DRY_RUN ]]; then
|
|
|
|
|
${v.onChange}
|
|
|
|
|
fi
|
2018-02-16 23:32:29 +00:00
|
|
|
|
fi
|
|
|
|
|
'') (filter (v: v.onChange != "") (attrValues cfg))
|
|
|
|
|
);
|
|
|
|
|
|
2019-03-18 00:25:14 +00:00
|
|
|
|
# Symlink directories and files that have the right execute bit.
|
|
|
|
|
# Copy files that need their execute bit changed.
|
2021-06-27 21:31:20 +00:00
|
|
|
|
home-files = pkgs.runCommandLocal
|
2019-03-18 00:25:14 +00:00
|
|
|
|
"home-manager-files"
|
|
|
|
|
{
|
2020-06-05 05:26:03 +00:00
|
|
|
|
nativeBuildInputs = [ pkgs.xorg.lndir ];
|
2019-03-18 00:25:14 +00:00
|
|
|
|
}
|
|
|
|
|
(''
|
2017-11-06 09:28:50 +00:00
|
|
|
|
mkdir -p $out
|
|
|
|
|
|
2019-11-22 09:54:29 +00:00
|
|
|
|
# Needed in case /nix is a symbolic link.
|
|
|
|
|
realOut="$(realpath -m "$out")"
|
|
|
|
|
|
2017-11-06 09:28:50 +00:00
|
|
|
|
function insertFile() {
|
|
|
|
|
local source="$1"
|
|
|
|
|
local relTarget="$2"
|
|
|
|
|
local executable="$3"
|
2017-12-11 14:14:45 +00:00
|
|
|
|
local recursive="$4"
|
2017-11-06 09:28:50 +00:00
|
|
|
|
|
2021-06-27 14:42:45 +00:00
|
|
|
|
# If the target already exists then we have a collision. Note, this
|
|
|
|
|
# should not happen due to the assertion found in the 'files' module.
|
|
|
|
|
# We therefore simply log the conflict and otherwise ignore it, mainly
|
|
|
|
|
# to make the `files-target-config` test work as expected.
|
|
|
|
|
if [[ -e "$realOut/$relTarget" ]]; then
|
|
|
|
|
echo "File conflict for file '$relTarget'" >&2
|
|
|
|
|
return
|
|
|
|
|
fi
|
|
|
|
|
|
2017-11-06 09:28:50 +00:00
|
|
|
|
# Figure out the real absolute path to the target.
|
|
|
|
|
local target
|
2019-11-22 09:54:29 +00:00
|
|
|
|
target="$(realpath -m "$realOut/$relTarget")"
|
2017-11-06 09:28:50 +00:00
|
|
|
|
|
|
|
|
|
# Target path must be within $HOME.
|
2019-11-22 09:54:29 +00:00
|
|
|
|
if [[ ! $target == $realOut* ]] ; then
|
2017-11-06 09:28:50 +00:00
|
|
|
|
echo "Error installing file '$relTarget' outside \$HOME" >&2
|
|
|
|
|
exit 1
|
|
|
|
|
fi
|
2017-10-05 19:38:46 +00:00
|
|
|
|
|
2017-11-06 09:28:50 +00:00
|
|
|
|
mkdir -p "$(dirname "$target")"
|
|
|
|
|
if [[ -d $source ]]; then
|
2017-11-06 17:00:25 +00:00
|
|
|
|
if [[ $recursive ]]; then
|
|
|
|
|
mkdir -p "$target"
|
|
|
|
|
lndir -silent "$source" "$target"
|
|
|
|
|
else
|
|
|
|
|
ln -s "$source" "$target"
|
|
|
|
|
fi
|
2017-11-06 09:28:50 +00:00
|
|
|
|
else
|
|
|
|
|
[[ -x $source ]] && isExecutable=1 || isExecutable=""
|
2017-11-11 23:49:36 +00:00
|
|
|
|
|
|
|
|
|
# Link the file into the home file directory if possible,
|
|
|
|
|
# i.e., if the executable bit of the source is the same we
|
|
|
|
|
# expect for the target. Otherwise, we copy the file and
|
|
|
|
|
# set the executable bit to the expected value.
|
2017-12-02 21:52:35 +00:00
|
|
|
|
if [[ $executable == inherit || $isExecutable == $executable ]]; then
|
2017-11-06 09:28:50 +00:00
|
|
|
|
ln -s "$source" "$target"
|
|
|
|
|
else
|
|
|
|
|
cp "$source" "$target"
|
2017-11-11 23:49:36 +00:00
|
|
|
|
|
|
|
|
|
if [[ $executable == inherit ]]; then
|
|
|
|
|
# Don't change file mode if it should match the source.
|
|
|
|
|
:
|
|
|
|
|
elif [[ $executable ]]; then
|
2017-11-06 09:28:50 +00:00
|
|
|
|
chmod +x "$target"
|
2017-10-05 19:38:46 +00:00
|
|
|
|
else
|
2017-11-06 09:28:50 +00:00
|
|
|
|
chmod -x "$target"
|
2017-10-05 19:38:46 +00:00
|
|
|
|
fi
|
2017-11-06 09:28:50 +00:00
|
|
|
|
fi
|
|
|
|
|
fi
|
|
|
|
|
}
|
|
|
|
|
'' + concatStrings (
|
|
|
|
|
mapAttrsToList (n: v: ''
|
2020-08-29 16:22:03 +00:00
|
|
|
|
insertFile ${
|
|
|
|
|
escapeShellArgs [
|
|
|
|
|
(sourceStorePath v)
|
|
|
|
|
v.target
|
|
|
|
|
(if v.executable == null
|
|
|
|
|
then "inherit"
|
|
|
|
|
else toString v.executable)
|
|
|
|
|
(toString v.recursive)
|
|
|
|
|
]}
|
2017-11-06 09:28:50 +00:00
|
|
|
|
'') cfg
|
2019-03-18 00:25:14 +00:00
|
|
|
|
));
|
2017-10-05 19:38:46 +00:00
|
|
|
|
};
|
|
|
|
|
}
|