forked from lix-project/lix
630ae0c9d7
get rid of GC roots. Nix-build places a symlink `result' in the current directory. Previously, removing that symlink would not remove the store path being linked to as a GC root. Now, the GC root created by nix-build is actually a symlink in `/nix/var/nix/gcroots/auto' to `result'. So if that symlink is removed the GC root automatically becomes invalid (since it can no longer be resolved). The root itself is not automatically removed - the garbage collector should delete dangling roots.
60 lines
1.3 KiB
Plaintext
60 lines
1.3 KiB
Plaintext
#! @shell@ -e
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nixExpr=$1
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if test -z "$nixExpr"; then
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echo "syntax: $0 NIX-EXPR..." >&2
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exit 1
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fi
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extraArgs=
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addDrvLink=0
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addOutLink=1
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trap 'rm -f ./.nix-build-tmp-*' EXIT
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# Process the arguments.
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for i in "$@"; do
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case "$i" in
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--add-drv-link)
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addDrvLink=1
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;;
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--no-link)
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addOutLink=0
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;;
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-*)
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extraArgs="$extraArgs $i"
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;;
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*)
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# Instantiate the Nix expression.
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prefix=
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if test "$addDrvLink" = 0; then prefix=.nix-build-tmp-; fi
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storeExprs=$(@bindir@/nix-instantiate \
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--add-root ./${prefix}derivation --indirect \
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"$i")
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for j in $storeExprs; do
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echo "store expression is $j $(readlink "$j")" >&2
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done
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# Build the resulting store derivation.
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prefix=
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if test "$addOutLink" = 0; then prefix=.nix-build-tmp-; fi
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outPaths=$(@bindir@/nix-store \
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--add-root ./${prefix}result --indirect \
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-rv $extraArgs $storeExprs)
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for j in $outPaths; do
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echo "$j $(readlink "$j")"
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done
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;;
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esac
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done
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