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https://github.com/NixOS/nix.git
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41 lines
1.1 KiB
Bash
41 lines
1.1 KiB
Bash
source common.sh
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drvPath1=$($nixinstantiate gc-concurrent.nix)
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outPath1=$($nixstore -q $drvPath1)
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drvPath2=$($nixinstantiate gc-concurrent2.nix)
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outPath2=$($nixstore -q $drvPath2)
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rm -f "$NIX_STATE_DIR"/gcroots/foo
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ln -s $drvPath2 "$NIX_STATE_DIR"/gcroots/foo
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# Start build #1 in the background. It starts immediately.
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$nixstore -rvv "$drvPath1" &
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pid1=$!
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# Start build #2 in the background after 3 seconds.
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(sleep 3 && $nixstore -rvv "$drvPath2") &
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pid2=$!
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# Run the garbage collector while the build is running. Note: the GC
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# sleeps for *another* 2 seconds after acquiring the GC lock. This
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# checks whether build #1
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sleep 2
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NIX_DEBUG_GC_WAIT=1 $NIX_BIN_DIR/nix-collect-garbage -vvvvv
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# Wait for build #1/#2 to finish.
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echo waiting for pid $pid1 to finish...
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wait $pid1
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echo waiting for pid $pid2 to finish...
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wait $pid2
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# Check that the root of build #1 and its dependencies haven't been
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# deleted.
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cat $outPath1/foobar
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cat $outPath1/input-2/bar
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# Build #2 should have failed because its derivation got garbage collected.
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cat $outPath2/foobar
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rm "$NIX_STATE_DIR"/gcroots/foo
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