* Allow a known hash to be specified.

svn path=/nixpkgs/trunk/; revision=1892
This commit is contained in:
Eelco Dolstra 2004-12-17 11:04:18 +00:00
parent 2a3f5188b5
commit 60e7948db1

View file

@ -2,6 +2,7 @@
url=$1
rev=$2
hash=$3
if test -z "$url"; then
echo "syntax: nix-prefetch-svn URL [REVISION]" >&2
@ -10,27 +11,32 @@ fi
test -n "$rev" || rev="HEAD"
# !!! hacky; we should have a way to query the location of the store.
if storeDir=$(which nix-store); then
storeDir=$(dirname $(dirname "$storeDir"))/store
else
storeDir=/nix/store
# Determine the hash, unless it was given.
if test -z "$hash"; then
# !!! hacky; we should have a way to query the location of the store.
if storeDir=$(which nix-store); then
storeDir=$(dirname $(dirname "$storeDir"))/store
else
storeDir=/nix/store
fi
# !!! race? should be relatively safe, `svn export' barfs if $tmpPath exists.
tmpPath1=$storeDir/svn-checkout-tmp-$$
# Perform the checkout.
svn export -r "$rev" "$url" $tmpPath1 >&2
# Compute the hash.
hash=$(nix-hash $tmpPath1)
echo "hash is $hash" >&2
# Rename it so that the fetchsvn builder can find it.
tmpPath2=$storeDir/svn-checkout-tmp-$hash
test -e $tmpPath2 || mv $tmpPath1 $tmpPath2 # !!! race
fi
# !!! race? should be relatively safe, `svn export' barfs if $tmpPath exists.
tmpPath1=$storeDir/svn-checkout-tmp-$$
# Perform the checkout.
svn export -r "$rev" "$url" $tmpPath1 >&2
# Compute the hash.
hash=$(nix-hash $tmpPath1)
echo "hash is $hash" >&2
# Rename it so that the fetchsvn builder can find it.
tmpPath2=$storeDir/svn-checkout-tmp-$hash
test -e $tmpPath2 || mv $tmpPath1 $tmpPath2 # !!! race
# Create a Nix expression that does a fetchsvn.
nixExpr=$(dirname $(readlink -f $0))/../../system/i686-linux.nix
storeExpr=$( \
@ -42,7 +48,9 @@ finalPath=$(nix-store -qnB --force-realise $storeExpr)
echo "path is $finalPath" >&2
rm -rf $tmpPath2 || true
if test -n "$tmpPath2"; then
rm -rf $tmpPath2 || true
fi
echo $hash