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fix: avoid needless flake.nix/flake.lock rewrites #130

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Merged
vic merged 2 commits into from
Jul 27, 2026
Merged

fix: avoid needless flake.nix/flake.lock rewrites #130

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d824d02
fix: avoid rewriting flake.nix when its content is unchanged
vidhanio Jul 24, 2026
7eab820
fix: avoid needless flake.lock rewrites in prune-lock-run
vidhanio Jul 24, 2026
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9 changes: 7 additions & 2 deletions modules/options/prune-lock.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -30,10 +30,15 @@ let
pkgs:
pkgs.writeShellApplication {
name = "prune-lock";
runtimeInputs = [ pkgs.diffutils ];
text = ''
nix flake metadata > /dev/null
${prune-cmd pkgs} flake.lock pruned.lock
mv pruned.lock flake.lock
if cmp -s flake.lock pruned.lock; then
rm pruned.lock
else
mv pruned.lock flake.lock
fi
nix flake metadata > /dev/null
'';
};

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5 changes: 4 additions & 1 deletion modules/write-flake.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -110,9 +110,12 @@ let
pkgs.writeShellApplication {
name = "write-flake";
meta.description = "Generate a flake.nix file";
runtimeInputs = [ pkgs.diffutils ];
text = ''
cd ${config.flake-file.intoPath}
cat ${formatted pkgs} > flake.nix
if ! cmp -s ${formatted pkgs} flake.nix; then
cat ${formatted pkgs} > flake.nix
fi
${hooks}
'';
};
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