26 lines
943 B
Nix
26 lines
943 B
Nix
{
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lib,
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runCommandLocal,
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nix,
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}:
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# Replace some direct dependencies of drv, not recursing into the dependency tree.
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# You likely want to use replaceDependencies instead, unless you plan to implement your own recursion mechanism.
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{ drv, replacements ? [ ] }:
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let inherit (lib) all stringLength substring concatStringsSep;
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in assert all ({ oldDependency, newDependency }:
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stringLength oldDependency == stringLength newDependency) replacements;
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if replacements == [ ] then
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drv
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else
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let drvName = substring 33 (stringLength (baseNameOf drv)) (baseNameOf drv);
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in runCommandLocal drvName { nixStore = "${nix}/bin/nix-store"; } ''
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$nixStore --dump ${drv} | sed 's|${
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baseNameOf drv
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}|'$(basename $out)'|g' | sed -e ${
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concatStringsSep " -e " (map ({ oldDependency, newDependency }:
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"'s|${baseNameOf oldDependency}|${baseNameOf newDependency}|g'")
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replacements)
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} | $nixStore --restore $out
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''
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