Luke Granger-Brown
57725ef3ec
git-subtree-dir: third_party/nixpkgs git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
58 lines
1.8 KiB
Nix
58 lines
1.8 KiB
Nix
{ lib, stdenvNoCC }:
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/*
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This is a wrapper around `substitute` in the stdenv.
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Attribute arguments:
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- `name` (optional): The name of the resulting derivation
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- `src`: The path to the file to substitute
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- `substitutions`: The list of substitution arguments to pass
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See https://nixos.org/manual/nixpkgs/stable/#fun-substitute
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- `replacements`: Deprecated version of `substitutions`
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that doesn't support spaces in arguments.
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Example:
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```nix
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{ substitute }:
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substitute {
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src = ./greeting.txt;
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substitutions = [
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"--replace"
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"world"
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"paul"
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];
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}
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```
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See ../../test/substitute for tests
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*/
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args:
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let
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name = if args ? name then args.name else baseNameOf (toString args.src);
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deprecationReplacement = lib.pipe args.replacements [
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lib.toList
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(map (lib.splitString " "))
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lib.concatLists
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(lib.concatMapStringsSep " " lib.strings.escapeNixString)
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];
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optionalDeprecationWarning =
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# substitutions is only available starting 24.05.
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# TODO: Remove support for replacements sometime after the next release
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lib.warnIf (args ? replacements && lib.oldestSupportedReleaseIsAtLeast 2405) ''
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pkgs.substitute: For "${name}", `replacements` is used, which is deprecated since it doesn't support arguments with spaces. Use `substitutions` instead:
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substitutions = [ ${deprecationReplacement} ];'';
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in
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optionalDeprecationWarning
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stdenvNoCC.mkDerivation ({
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inherit name;
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builder = ./substitute.sh;
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inherit (args) src;
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preferLocalBuild = true;
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allowSubstitutes = false;
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} // args // lib.optionalAttrs (args ? substitutions) {
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substitutions =
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assert lib.assertMsg (lib.isList args.substitutions) ''
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pkgs.substitute: For "${name}", `substitutions` is passed, which is expected to be a list, but it's a ${builtins.typeOf args.substitutions} instead.'';
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lib.escapeShellArgs args.substitutions;
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})
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