84722d67d2
Instead, if a fixed-output derivation produces has an incorrect output hash, we now unconditionally move the outputs to the path corresponding with the actual hash and register it as valid. Thus, after correcting the hash in the Nix expression (e.g. in a fetchurl call), the fixed-output derivation doesn't have to be built again. It would still be good to have a command for reporting the actual hash of a fixed-output derivation (instead of throwing an error), but "nix-build --hash" didn't do that.
56 lines
1.6 KiB
Bash
56 lines
1.6 KiB
Bash
source common.sh
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clearStore
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export IMPURE_VAR1=foo
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export IMPURE_VAR2=bar
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path=$(nix-store -q $(nix-instantiate fixed.nix -A good.0))
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echo 'testing bad...'
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nix-build fixed.nix -A bad --no-out-link && fail "should fail"
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# Building with the bad hash should produce the "good" output path as
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# a side-effect.
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[[ -e $path ]]
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nix path-info --json $path | grep fixed:md5:2qk15sxzzjlnpjk9brn7j8ppcd
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echo 'testing good...'
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nix-build fixed.nix -A good --no-out-link
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echo 'testing good2...'
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nix-build fixed.nix -A good2 --no-out-link
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echo 'testing reallyBad...'
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nix-instantiate fixed.nix -A reallyBad && fail "should fail"
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# While we're at it, check attribute selection a bit more.
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echo 'testing attribute selection...'
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test $(nix-instantiate fixed.nix -A good.1 | wc -l) = 1
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# Test parallel builds of derivations that produce the same output.
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# Only one should run at the same time.
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echo 'testing parallelSame...'
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clearStore
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nix-build fixed.nix -A parallelSame --no-out-link -j2
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# Fixed-output derivations with a recursive SHA-256 hash should
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# produce the same path as "nix-store --add".
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echo 'testing sameAsAdd...'
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out=$(nix-build fixed.nix -A sameAsAdd --no-out-link)
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# This is what fixed.builder2 produces...
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rm -rf $TEST_ROOT/fixed
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mkdir $TEST_ROOT/fixed
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mkdir $TEST_ROOT/fixed/bla
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echo "Hello World!" > $TEST_ROOT/fixed/foo
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ln -s foo $TEST_ROOT/fixed/bar
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out2=$(nix-store --add $TEST_ROOT/fixed)
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[ "$out" = "$out2" ]
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out3=$(nix-store --add-fixed --recursive sha256 $TEST_ROOT/fixed)
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[ "$out" = "$out3" ]
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out4=$(nix-store --print-fixed-path --recursive sha256 "1ixr6yd3297ciyp9im522dfxpqbkhcw0pylkb2aab915278fqaik" fixed)
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[ "$out" = "$out4" ]
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