tvl-depot/corepkgs/fetchurl/builder.sh.in

#! @shell@ -e

export PATH=/bin:/usr/bin

echo "downloading $url into $out"

prefetch=@storedir@/nix-prefetch-url-$outputHash
if test -f "$prefetch"; then
    echo "using prefetched $prefetch";
    mv $prefetch $out
else
    @curl@ --fail --location --max-redirs 20 "$url" > "$out"
fi
* Switched from wget to curl. * Made the dependencies on bzip2 and the shell explicit. 2004-04-06 10:18:51 +02:00			`#! @shell@ -e`
* Moved the fetchutl package to corepkgs. 2003-07-10 11:11:30 +02:00
* A script `nix-prefetch-url' to fetch a URL, place it in the Nix store, and print its hash. 2003-08-15 12:13:41 +02:00			`export PATH=/bin:/usr/bin`

* Switched from wget to curl. * Made the dependencies on bzip2 and the shell explicit. 2004-04-06 10:18:51 +02:00			`echo "downloading $url into $out"`
* A script `nix-prefetch-url' to fetch a URL, place it in the Nix store, and print its hash. 2003-08-15 12:13:41 +02:00
* Removed the `id' attribute hack. * Formalise the notion of fixed-output derivations, i.e., derivations for which a cryptographic hash of the output is known in advance. Changes to such derivations should not propagate upwards through the dependency graph. Previously this was done by specifying the hash component of the output path through the `id' attribute, but this is insecure since you can lie about it (i.e., you can specify any hash and then produce a completely different output). Now the responsibility for checking the output is moved from the builder to Nix itself. A fixed-output derivation can be created by specifying the `outputHash' and `outputHashAlgo' attributes, the latter taking values `md5', `sha1', and `sha256', and the former specifying the actual hash in hexadecimal or in base-32 (auto-detected by looking at the length of the attribute value). MD5 is included for compatibility but should be considered deprecated. * Removed the `drvPath' pseudo-attribute in derivation results. It's no longer necessary. * Cleaned up the support for multiple output paths in derivation store expressions. Each output now has a unique identifier (e.g., `out', `devel', `docs'). Previously there was no way to tell output paths apart at the store expression level. * `nix-hash' now has a flag `--base32' to specify that the hash should be printed in base-32 notation. * `fetchurl' accepts parameters `sha256' and `sha1' in addition to `md5'. * `nix-prefetch-url' now prints out a SHA-1 hash in base-32. (TODO: a flag to specify the hash.) 2005-01-17 17:55:19 +01:00			`prefetch=@storedir@/nix-prefetch-url-$outputHash`
* A script `nix-prefetch-url' to fetch a URL, place it in the Nix store, and print its hash. 2003-08-15 12:13:41 +02:00			`if test -f "$prefetch"; then`
			`echo "using prefetched $prefetch";`
* Switched from wget to curl. * Made the dependencies on bzip2 and the shell explicit. 2004-04-06 10:18:51 +02:00			`mv $prefetch $out`
* A script `nix-prefetch-url' to fetch a URL, place it in the Nix store, and print its hash. 2003-08-15 12:13:41 +02:00			`else`
* Switched from wget to curl. * Made the dependencies on bzip2 and the shell explicit. 2004-04-06 10:18:51 +02:00			`@curl@ --fail --location --max-redirs 20 "$url" > "$out"`
* A script `nix-prefetch-url' to fetch a URL, place it in the Nix store, and print its hash. 2003-08-15 12:13:41 +02:00			`fi`