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Diffstat (limited to 'pkgs/build-support/fetchegg/default.nix')
-rw-r--r-- | pkgs/build-support/fetchegg/default.nix | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/pkgs/build-support/fetchegg/default.nix b/pkgs/build-support/fetchegg/default.nix new file mode 100644 index 000000000000..223d2098c770 --- /dev/null +++ b/pkgs/build-support/fetchegg/default.nix @@ -0,0 +1,28 @@ +# Fetches a chicken egg from henrietta using `chicken-install -r' +# See: http://wiki.call-cc.org/chicken-projects/egg-index-4.html + +{ stdenv, chicken }: +{ name, version, md5 ? "", sha256 ? "" }: + +stdenv.mkDerivation { + name = "chicken-${name}-export"; + builder = ./builder.sh; + buildInputs = [ chicken ]; + + outputHashAlgo = if sha256 == "" then "md5" else "sha256"; + outputHashMode = "recursive"; + outputHash = if sha256 == "" then md5 else sha256; + + inherit version; + + eggName = name; + + impureEnvVars = [ + # We borrow these environment variables from the caller to allow + # easy proxy configuration. This is impure, but a fixed-output + # derivation like fetchurl is allowed to do so since its result is + # by definition pure. + "http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy" + ]; +} + |