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Merge pull request #3958 from obsidiansystems/ca-floating-upstream

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CA derivations that depend on other CA derivations
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Eelco Dolstra 2020-09-29 11:37:29 +02:00 • committed by GitHub
commit 1e8855a7f7
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6 changed files with 226 additions and 32 deletions
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22
tests/content-addressed.nix
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@ -29,4 +29,26 @@ rec {
outputHashMode = "recursive";
outputHashAlgo = "sha256";
};
dependentCA = mkDerivation {
name = "dependent";
buildCommand = ''
echo "building a dependent derivation"
mkdir -p $out
echo ${rootCA}/hello > $out/dep
'';
__contentAddressed = true;
outputHashMode = "recursive";
outputHashAlgo = "sha256";
};
transitivelyDependentCA = mkDerivation {
name = "transitively-dependent";
buildCommand = ''
echo "building transitively-dependent"
cat ${dependentCA}/dep
echo ${dependentCA} > $out
'';
__contentAddressed = true;
outputHashMode = "recursive";
outputHashAlgo = "sha256";
};
}

25
tests/content-addressed.sh
View file

@ -2,19 +2,26 @@
source common.sh
clearStore
clearCache
export REMOTE_STORE=file://$cacheDir
drv=$(nix-instantiate --experimental-features ca-derivations ./content-addressed.nix -A rootCA --arg seed 1)
nix --experimental-features 'nix-command ca-derivations' show-derivation --derivation "$drv" --arg seed 1
commonArgs=("--experimental-features" "ca-derivations" "./content-addressed.nix" "-A" "rootCA" "--no-out-link")
out1=$(nix-build "${commonArgs[@]}" ./content-addressed.nix --arg seed 1)
out2=$(nix-build "${commonArgs[@]}" ./content-addressed.nix --arg seed 2)
testDerivation () {
local derivationPath=$1
local commonArgs=("--experimental-features" "ca-derivations" "./content-addressed.nix" "-A" "$derivationPath" "--no-out-link")
local out1 out2
out1=$(nix-build "${commonArgs[@]}" --arg seed 1)
out2=$(nix-build "${commonArgs[@]}" --arg seed 2 "${secondSeedArgs[@]}")
test "$out1" == "$out2"
}
test $out1 == $out2
testDerivation rootCA
# The seed only changes the root derivation, and not it's output, so the
# dependent derivations should only need to be built once.
secondSeedArgs=(-j0)
# Don't directly build depenentCA, that way we'll make sure we dodn't rely on
# dependent derivations always being already built.
#testDerivation dependentCA
testDerivation transitivelyDependentCA
nix-instantiate --experimental-features ca-derivations ./content-addressed.nix -A rootCA --arg seed 5
nix-collect-garbage --experimental-features ca-derivations --option keep-derivations true