mirror of
https://github.com/NixOS/nixpkgs
synced 2024-10-19 03:47:13 -04:00
50321b735b
fetching a file with hash HASH of type TYPE, we first try to
download <base-url>/<type>/<hash>, where <base-url> is one of a list
of mirrors. For instance, given
src = fetchurl {
url = http://releases.mozilla.org/pub/mozilla.org/firefox/releases/2.0.0.6/source/firefox-2.0.0.6-source.tar.bz2;
sha1 = "eb72f55e4a8bf08e8c6ef227c0ade3d068ba1082";
};
and the mirror list [http://nix.cs.uu.nl/dist/tarballs], we first
try to download
eb72f55e4a
and if that fails, we use the original URL.
The list of mirrors is not yet user-configurable.
* `fetchurl' now also accepts an argument `urls' instead of `url' for
a list of alternative download locations, which fetchurl will try in
sequence.
svn path=/nixpkgs/trunk/; revision=9190
62 lines
1.7 KiB
Nix
62 lines
1.7 KiB
Nix
# Argh, this thing is duplicated (more-or-less) in Nix (in corepkgs).
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# Need to find a way to combine them.
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{stdenv, curl}: # Note that `curl' may be `null', in case of the native stdenv.
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{ # URL to fetch.
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url ? ""
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, # Alternatively, a list of URLs specifying alternative download
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# locations. They are tried in order.
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urls ? []
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, # Name of the file. If empty, use the basename of `url' (or of the
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# first element of `urls').
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name ? ""
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# Different ways of specifying the hash.
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, outputHash ? ""
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, outputHashAlgo ? ""
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, md5 ? ""
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, sha1 ? ""
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, sha256 ? ""
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}:
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assert urls != [] -> url == "";
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assert url != "" -> urls == [];
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assert (outputHash != "" && outputHashAlgo != "")
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|| md5 != "" || sha1 != "" || sha256 != "";
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let urls_ = if urls != [] then urls else [url]; in
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stdenv.mkDerivation {
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name =
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if name != "" then name
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else baseNameOf (toString (builtins.head urls_));
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builder = ./builder.sh;
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buildInputs = [curl];
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urls = urls_;
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# The content-addressable mirrors.
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hashedMirrors = [
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http://nix.cs.uu.nl/dist/tarballs
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];
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# Compatibility with Nix <= 0.7.
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id = md5;
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# New-style output content requirements.
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outputHashAlgo = if outputHashAlgo != "" then outputHashAlgo else
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if sha256 != "" then "sha256" else if sha1 != "" then "sha1" else "md5";
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outputHash = if outputHash != "" then outputHash else
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if sha256 != "" then sha256 else if sha1 != "" then sha1 else md5;
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# We borrow these environment variables from the caller to allow
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# easy proxy configuration. This is impure, but a fixed-output
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# derivation like fetchurl is allowed to do so since its result is
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# by definition pure.
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impureEnvVars = ["http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy"];
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}
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