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https://github.com/nix-community/home-manager
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files: fix use of onChange with directory source
Previously, the comparison would not handle directory comparison correctly, always finding that the source and target differed. This would trigger the `onChange` script on each activation. Fixes #2004
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2 changed files with 25 additions and 1 deletions
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@ -39,6 +39,17 @@ in
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};
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};
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config = {
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config = {
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assertions = [(
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let
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conflicts = mapAttrsToList (n: v: n)
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(filterAttrs (n: v: v.recursive && v.onChange != "") cfg);
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in {
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assertion = conflicts == [];
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message = ''
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Cannot use 'home.file.<name>.onChange' when 'home.file.<name>.recursive' is enabled:
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${concatStringsSep ", " conflicts}'';
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})];
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lib.file.mkOutOfStoreSymlink = path:
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lib.file.mkOutOfStoreSymlink = path:
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let
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let
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pathStr = toString path;
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pathStr = toString path;
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@ -236,12 +247,22 @@ in
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home.activation.checkFilesChanged = hm.dag.entryBefore ["linkGeneration"] (
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home.activation.checkFilesChanged = hm.dag.entryBefore ["linkGeneration"] (
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''
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''
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function _cmp() {
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if [[ -d $1 && -d $2 ]]; then
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diff -rq "$1" "$2" &> /dev/null
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else
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cmp --quiet "$1" "$2"
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fi
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}
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declare -A changedFiles
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declare -A changedFiles
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'' + concatMapStrings (v: ''
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'' + concatMapStrings (v: ''
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cmp --quiet "${sourceStorePath v}" "${homeDirectory}/${v.target}" \
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_cmp "${sourceStorePath v}" "${homeDirectory}/${v.target}" \
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&& changedFiles["${v.target}"]=0 \
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&& changedFiles["${v.target}"]=0 \
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|| changedFiles["${v.target}"]=1
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|| changedFiles["${v.target}"]=1
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'') (filter (v: v.onChange != "") (attrValues cfg))
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'') (filter (v: v.onChange != "") (attrValues cfg))
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+ ''
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unset -f _cmp
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''
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);
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);
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home.activation.onFilesChange = hm.dag.entryAfter ["linkGeneration"] (
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home.activation.onFilesChange = hm.dag.entryAfter ["linkGeneration"] (
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@ -82,6 +82,9 @@ with lib;
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generations. The script will be run
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generations. The script will be run
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<emphasis>after</emphasis> the new files have been linked
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<emphasis>after</emphasis> the new files have been linked
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into place.
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into place.
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</para><para>
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Note, this option cannot be used when <literal>recursive</literal>
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is enabled.
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'';
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'';
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};
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};
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