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Support fixed-output derivations depending on impure derivations

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This commit is contained in:
Eelco Dolstra 2022-03-11 13:23:23 +01:00
parent 5cd72598fe
commit 18935e8b9f
4 changed files with 48 additions and 9 deletions
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22
tests/impure-derivations.nix
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@ -7,6 +7,7 @@ rec {
outputs = [ "out" "stuff" ];
buildCommand =
''
echo impure
x=$(< $TEST_ROOT/counter)
mkdir $out $stuff
echo $x > $out/n
@ -23,6 +24,7 @@ rec {
name = "impure-on-impure";
buildCommand =
''
echo impure-on-impure
x=$(< ${impure}/n)
mkdir $out
printf X$x > $out/n
@ -43,4 +45,24 @@ rec {
'';
};
contentAddressed = mkDerivation {
name = "content-addressed";
buildCommand =
''
echo content-addressed
x=$(< ${impureOnImpure}/n)
printf ''${x:0:1} > $out
'';
outputHashAlgo = "sha256";
outputHashMode = "recursive";
outputHash = "sha256-eBYxcgkuWuiqs4cKNgKwkb3vY/HR0vVsJnqe8itJGcQ=";
};
inputAddressedAfterCA = mkDerivation {
name = "input-addressed-after-ca";
buildCommand =
''
cat ${contentAddressed} > $out
'';
};
}

19
tests/impure-derivations.sh
View file

@ -21,10 +21,10 @@ path2=$(nix build -L --no-link --json --file ./impure-derivations.nix impure | j
[[ $(< $path2/n) = 1 ]]
# Test impure derivations that depend on impure derivations.
path3=$(nix build -L --no-link --json --file ./impure-derivations.nix impureOnImpure -vvvvv | jq -r .[].outputs.out)
path3=$(nix build -L --no-link --json --file ./impure-derivations.nix impureOnImpure | jq -r .[].outputs.out)
[[ $(< $path3/n) = X2 ]]
path4=$(nix build -L --no-link --json --file ./impure-derivations.nix impureOnImpure -vvvvv | jq -r .[].outputs.out)
path4=$(nix build -L --no-link --json --file ./impure-derivations.nix impureOnImpure | jq -r .[].outputs.out)
[[ $(< $path4/n) = X3 ]]
# Test that (self-)references work.
@ -37,3 +37,18 @@ nix build -L --no-link --json --file ./impure-derivations.nix inputAddressed 2>&
drvPath=$(nix eval --json --file ./impure-derivations.nix impure.drvPath | jq -r .)
[[ $(nix show-derivation $drvPath | jq ".[\"$drvPath\"].outputs.out.impure") = true ]]
[[ $(nix show-derivation $drvPath | jq ".[\"$drvPath\"].outputs.stuff.impure") = true ]]
# Fixed-output derivations *can* depend on impure derivations.
path5=$(nix build -L --no-link --json --file ./impure-derivations.nix contentAddressed | jq -r .[].outputs.out)
[[ $(< $path5) = X ]]
[[ $(< $TEST_ROOT/counter) = 5 ]]
# And they should not be rebuilt.
path5=$(nix build -L --no-link --json --file ./impure-derivations.nix contentAddressed | jq -r .[].outputs.out)
[[ $(< $path5) = X ]]
[[ $(< $TEST_ROOT/counter) = 5 ]]
# Input-addressed derivations can depend on fixed-output derivations that depend on impure derivations.
path6=$(nix build -L --no-link --json --file ./impure-derivations.nix inputAddressedAfterCA | jq -r .[].outputs.out)
[[ $(< $path6) = X ]]
[[ $(< $TEST_ROOT/counter) = 5 ]]