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