122 lines
3.7 KiB
Nix
122 lines
3.7 KiB
Nix
{ stdenv, curl }: # Note that `curl' may be `null', in case of the native stdenv.
|
|
|
|
let
|
|
|
|
mirrors = import ./mirrors.nix;
|
|
|
|
# Write the list of mirrors to a file that we can reuse between
|
|
# fetchurl instantiations, instead of passing the mirrors to
|
|
# fetchurl instantiations via environment variables. This makes the
|
|
# resulting store derivations (.drv files) much smaller, which in
|
|
# turn makes nix-env/nix-instantiate faster.
|
|
mirrorsFile =
|
|
stdenv.mkDerivation ({
|
|
name = "mirrors-list";
|
|
builder = ./write-mirror-list.sh;
|
|
} // mirrors);
|
|
|
|
# Names of the master sites that are mirrored (i.e., "sourceforge",
|
|
# "gnu", etc.).
|
|
sites = builtins.attrNames mirrors;
|
|
|
|
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"
|
|
|
|
# This variable allows the user to pass additional options to curl
|
|
"NIX_CURL_FLAGS"
|
|
|
|
# This variable allows the user to override hashedMirrors from the
|
|
# command-line.
|
|
"NIX_HASHED_MIRRORS"
|
|
|
|
# This variable allows overriding the timeout for connecting to
|
|
# the hashed mirrors.
|
|
"NIX_CONNECT_TIMEOUT"
|
|
] ++ (map (site: "NIX_MIRRORS_${site}") sites);
|
|
|
|
in
|
|
|
|
{ # URL to fetch.
|
|
url ? ""
|
|
|
|
, # Alternatively, a list of URLs specifying alternative download
|
|
# locations. They are tried in order.
|
|
urls ? []
|
|
|
|
, # Additional curl options needed for the download to succeed.
|
|
curlOpts ? ""
|
|
|
|
, # Name of the file. If empty, use the basename of `url' (or of the
|
|
# first element of `urls').
|
|
name ? ""
|
|
|
|
# Different ways of specifying the hash.
|
|
, outputHash ? ""
|
|
, outputHashAlgo ? ""
|
|
, md5 ? ""
|
|
, sha1 ? ""
|
|
, sha256 ? ""
|
|
|
|
, recursiveHash ? false
|
|
|
|
, # Shell code executed after the file has been fetched
|
|
# successfully. This can do things like check or transform the file.
|
|
postFetch ? ""
|
|
|
|
, # Whether to download to a temporary path rather than $out. Useful
|
|
# in conjunction with postFetch. The location of the temporary file
|
|
# is communicated to postFetch via $downloadedFile.
|
|
downloadToTemp ? false
|
|
|
|
, # If set, don't download the file, but write a list of all possible
|
|
# URLs (resulting from resolving mirror:// URLs) to $out.
|
|
showURLs ? false
|
|
}:
|
|
|
|
assert builtins.isList urls;
|
|
assert urls != [] -> url == "";
|
|
assert url != "" -> urls == [];
|
|
|
|
|
|
let
|
|
|
|
hasHash = showURLs || (outputHash != "" && outputHashAlgo != "")
|
|
|| md5 != "" || sha1 != "" || sha256 != "";
|
|
urls_ = if urls != [] then urls else [url];
|
|
|
|
in
|
|
|
|
if (!hasHash) then throw "Specify hash for fetchurl fixed-output derivation: ${stdenv.lib.concatStringsSep ", " urls_}" else stdenv.mkDerivation {
|
|
name =
|
|
if showURLs then "urls"
|
|
else if name != "" then name
|
|
else baseNameOf (toString (builtins.head urls_));
|
|
|
|
builder = ./builder.sh;
|
|
|
|
buildInputs = [ curl ];
|
|
|
|
urls = urls_;
|
|
|
|
# If set, prefer the content-addressable mirrors
|
|
# (http://tarballs.nixos.org) over the original URLs.
|
|
preferHashedMirrors = true;
|
|
|
|
# New-style output content requirements.
|
|
outputHashAlgo = if outputHashAlgo != "" then outputHashAlgo else
|
|
if sha256 != "" then "sha256" else if sha1 != "" then "sha1" else "md5";
|
|
outputHash = if outputHash != "" then outputHash else
|
|
if sha256 != "" then sha256 else if sha1 != "" then sha1 else md5;
|
|
|
|
outputHashMode = if recursiveHash then "recursive" else "flat";
|
|
|
|
inherit curlOpts showURLs mirrorsFile impureEnvVars postFetch downloadToTemp;
|
|
|
|
# Doing the download on a remote machine just duplicates network
|
|
# traffic, so don't do that.
|
|
preferLocalBuild = true;
|
|
}
|