41 lines
966 B
Text
41 lines
966 B
Text
#! @shell@ -e
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url=$1
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if test -z "$url"; then
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echo "syntax: nix-prefetch-url URL" >&2
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exit 1
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fi
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# !!! race? should be relatively safe, `svn export' barfs if $tmpPath exists.
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tmpPath1=@storedir@/nix-prefetch-url-$$
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# Perform the checkout.
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@curl@ --fail --location --max-redirs 20 "$url" > $tmpPath1
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# Compute the hash.
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hash=$(@bindir@/nix-hash --flat $tmpPath1)
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echo "hash is $hash" >&2
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# Rename it so that the fetchsvn builder can find it.
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tmpPath2=@storedir@/nix-prefetch-url-$hash
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test -e $tmpPath2 || mv $tmpPath1 $tmpPath2 # !!! race
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# Create a Nix expression that does a fetchsvn.
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storeExpr=$( \
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echo "(import @datadir@/nix/corepkgs/fetchurl) \
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{url = $url; md5 = \"$hash\"; system = \"@system@\";}" \
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| @bindir@/nix-instantiate -)
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# Realise it.
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finalPath=$(@bindir@/nix-store -qnB --force-realise $storeExpr)
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echo "path is $finalPath" >&2
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rm -rf $tmpPath2 || true
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echo $hash
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if test -n "$PRINT_PATH"; then
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echo $finalPath
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fi
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