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Merge pull request #10011 from NixOS/backport-10006-to-2.20-maintenance

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[Backport 2.20-maintenance] <nix/fetchurl.nix>: Restore support for "impure = true"
This commit is contained in:
Eelco Dolstra 2024-02-13 23:03:59 +01:00 committed by GitHub
commit 982d07d009
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GPG Key ID: B5690EEEBB952194
3 changed files with 9 additions and 5 deletions
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8
src/libstore/builtins/fetchurl.cc
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@ -20,9 +20,8 @@ void builtinFetchurl(const BasicDerivation & drv, const std::string & netrcData)
if (!out)
throw Error("'builtin:fetchurl' requires an 'out' output");
auto dof = std::get_if<DerivationOutput::CAFixed>(&out->raw);
if (!dof)
throw Error("'builtin:fetchurl' must be a fixed-output derivation");
if (!(drv.type().isFixed() || drv.type().isImpure()))
throw Error("'builtin:fetchurl' must be a fixed-output or impure derivation");
auto getAttr = [&](const std::string & name) {
auto i = drv.env.find(name);
@ -67,7 +66,8 @@ void builtinFetchurl(const BasicDerivation & drv, const std::string & netrcData)
};
/* Try the hashed mirrors first. */
if (dof->ca.method.getFileIngestionMethod() == FileIngestionMethod::Flat)
auto dof = std::get_if<DerivationOutput::CAFixed>(&out->raw);
if (dof && dof->ca.method.getFileIngestionMethod() == FileIngestionMethod::Flat)
for (auto hashedMirror : settings.hashedMirrors.get())
try {
if (!hasSuffix(hashedMirror, "/")) hashedMirror += '/';

2
tests/functional/fetchurl.sh
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@ -83,4 +83,4 @@ test -L $outPath/symlink
requireDaemonNewerThan "2.20"
expected=100
if [[ -v NIX_DAEMON_PACKAGE ]]; then expected=1; fi # work around the daemon not returning a 100 status correctly
expectStderr $expected nix-build --expr '{ url }: builtins.derivation { name = "nix-cache-info"; system = "x86_64-linux"; builder = "builtin:fetchurl"; inherit url; outputHashMode = "flat"; }' --argstr url file://$narxz 2>&1 | grep 'must be a fixed-output derivation'
expectStderr $expected nix-build --expr '{ url }: builtins.derivation { name = "nix-cache-info"; system = "x86_64-linux"; builder = "builtin:fetchurl"; inherit url; outputHashMode = "flat"; }' --argstr url file://$narxz 2>&1 | grep 'must be a fixed-output or impure derivation'

4
tests/functional/impure-derivations.sh
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@ -63,3 +63,7 @@ path5=$(nix build -L --no-link --json --file ./impure-derivations.nix contentAdd
path6=$(nix build -L --no-link --json --file ./impure-derivations.nix inputAddressedAfterCA | jq -r .[].outputs.out)
[[ $(< $path6) = X ]]
[[ $(< $TEST_ROOT/counter) = 5 ]]
# Test nix/fetchurl.nix.
path7=$(nix build -L --no-link --print-out-paths --expr "import <nix/fetchurl.nix> { impure = true; url = file://$PWD/impure-derivations.sh; }")
cmp $path7 $PWD/impure-derivations.sh