mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-10 00:08:07 +02:00
41 lines
966 B
Text
41 lines
966 B
Text
#! @shell@ -e
|
|
|
|
url=$1
|
|
|
|
if test -z "$url"; then
|
|
echo "syntax: nix-prefetch-url URL" >&2
|
|
exit 1
|
|
fi
|
|
|
|
# !!! race? should be relatively safe, `svn export' barfs if $tmpPath exists.
|
|
tmpPath1=@storedir@/nix-prefetch-url-$$
|
|
|
|
# Perform the checkout.
|
|
@curl@ --fail --location --max-redirs 20 "$url" > $tmpPath1
|
|
|
|
# Compute the hash.
|
|
hash=$(@bindir@/nix-hash --flat $tmpPath1)
|
|
echo "hash is $hash" >&2
|
|
|
|
# Rename it so that the fetchsvn builder can find it.
|
|
tmpPath2=@storedir@/nix-prefetch-url-$hash
|
|
test -e $tmpPath2 || mv $tmpPath1 $tmpPath2 # !!! race
|
|
|
|
# Create a Nix expression that does a fetchsvn.
|
|
storeExpr=$( \
|
|
echo "(import @datadir@/nix/corepkgs/fetchurl) \
|
|
{url = $url; md5 = \"$hash\"; system = \"@system@\";}" \
|
|
| @bindir@/nix-instantiate -)
|
|
|
|
# Realise it.
|
|
finalPath=$(@bindir@/nix-store -qnB --force-realise $storeExpr)
|
|
|
|
echo "path is $finalPath" >&2
|
|
|
|
rm -rf $tmpPath2 || true
|
|
|
|
echo $hash
|
|
|
|
if test -n "$PRINT_PATH"; then
|
|
echo $finalPath
|
|
fi
|