af6b831faf
This reverts commit 1cf3103bca.
The commit implemented a "nice to have" TODO, which ultimately causes
hash differences between Lix and Nix. We can't conditionally use the
`convertHash` builtin, because we don't have an alternative to produce
the same results.
59 lines
1.8 KiB
Nix
59 lines
1.8 KiB
Nix
{
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lib,
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writeText,
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}:
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let
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inherit (builtins) typeOf;
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in
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rec {
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# Docs: doc/build-helpers/dev-shell-tools.chapter.md
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# Tests: ./tests/default.nix
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# This function closely mirrors what this Nix code does:
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# https://github.com/NixOS/nix/blob/2.8.0/src/libexpr/primops.cc#L1102
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# https://github.com/NixOS/nix/blob/2.8.0/src/libexpr/eval.cc#L1981-L2036
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valueToString =
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value:
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# We can't just use `toString` on all derivation attributes because that
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# would not put path literals in the closure. So we explicitly copy
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# those into the store here
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if typeOf value == "path" then
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"${value}"
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else if typeOf value == "list" then
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toString (map valueToString value)
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else
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toString value;
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# Docs: doc/build-helpers/dev-shell-tools.chapter.md
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# Tests: ./tests/default.nix
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# https://github.com/NixOS/nix/blob/2.8.0/src/libstore/build/local-derivation-goal.cc#L992-L1004
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unstructuredDerivationInputEnv =
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{ drvAttrs }:
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# FIXME: this should be `normalAttrs // passAsFileAttrs`
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lib.mapAttrs'
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(
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name: value:
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let
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str = valueToString value;
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in
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if lib.elem name (drvAttrs.passAsFile or [ ]) then
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lib.nameValuePair "${name}Path" "${writeText "shell-passAsFile-${name}" str}"
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else
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lib.nameValuePair name str
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)
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(
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removeAttrs drvAttrs [
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# TODO: there may be more of these
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"args"
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]
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);
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# Docs: doc/build-helpers/dev-shell-tools.chapter.md
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# Tests: ./tests/default.nix
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derivationOutputEnv =
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{ outputList, outputMap }:
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# A mapping from output name to the nix store path where they should end up
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# https://github.com/NixOS/nix/blob/2.8.0/src/libexpr/primops.cc#L1253
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lib.genAttrs outputList (output: builtins.unsafeDiscardStringContext outputMap.${output}.outPath);
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}
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