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source common.sh
drvPath=$(nix-instantiate dependencies.nix)
outPath=$(nix-store -rvv "$drvPath")
# Set a GC root.
rm -f "$NIX_STATE_DIR"/gcroots/foo
ln -sf $outPath "$NIX_STATE_DIR"/gcroots/foo
[ "$(nix-store -q --roots $outPath)" = "$NIX_STATE_DIR/gcroots/foo -> $outPath" ]
nix-store --gc --print-roots | grep $outPath
nix-store --gc --print-live | grep $outPath
nix-store --gc --print-dead | grep $drvPath
if nix-store --gc --print-dead | grep $outPath; then false; fi
nix-store --gc --print-dead
inUse=$(readLink $outPath/input-2)
if nix-store --delete $inUse; then false; fi
test -e $inUse
if nix-store --delete $outPath; then false; fi
test -e $outPath
nix-collect-garbage
# Check that the root and its dependencies haven't been deleted.
cat $outPath/foobar
cat $outPath/input-2/bar
# Check that the derivation has been GC'd.
if test -e $drvPath; then false; fi
rm "$NIX_STATE_DIR"/gcroots/foo
nix-collect-garbage
# Check that the output has been GC'd.
if test -e $outPath/foobar; then false; fi
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