nixpkgs/pkgs/build-support/fetchurl/default.nix

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{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 =
if builtins ? attrNames
then builtins.attrNames mirrors
else [] /* backwards compatibility */;
in
{ # URL to fetch.
url ? ""
, # Alternatively, a list of URLs specifying alternative download
# locations. They are tried in order.
urls ? []
, # 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 ? ""
, # 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 urls != [] -> url == "";
assert url != "" -> urls == [];
assert showURLs || (outputHash != "" && outputHashAlgo != "")
|| md5 != "" || sha1 != "" || sha256 != "";
* The stdenv setup script now defines a generic builder that allows builders for typical Autoconf-style to be much shorten, e.g., . $stdenv/setup genericBuild The generic builder does lots of stuff automatically: - Unpacks source archives specified by $src or $srcs (it knows about gzip, bzip2, tar, zip, and unpacked source trees). - Determines the source tree. - Applies patches specified by $patches. - Fixes libtool not to search for libraries in /lib etc. - Runs `configure'. - Runs `make'. - Runs `make install'. - Strips debug information from static libraries. - Writes nested log information (in the format accepted by `log2xml'). There are also lots of hooks and variables to customise the generic builder. See `stdenv/generic/docs.txt'. * Adapted the base packages (i.e., the ones used by stdenv) to use the generic builder. * We now use `curl' instead of `wget' to download files in `fetchurl'. * Neither `curl' nor `wget' are part of stdenv. We shouldn't encourage people to download stuff in builders (impure!). * Updated some packages. * `buildinputs' is now `buildInputs' (but the old name also works). * `findInputs' in the setup script now prevents inputs from being processed multiple times (which could happen, e.g., if an input was a propagated input of several other inputs; this caused the size variables like $PATH to blow up exponentially in the worst case). * Patched GNU Make to write nested log information in the format accepted by `log2xml'. Also, prior to writing the build command, Make now writes a line `building X' to indicate what is being built. This is unfortunately often obscured by the gigantic tool invocations in many Makefiles. The actual build commands are marked `unimportant' so that they don't clutter pages generated by `log2html'. svn path=/nixpkgs/trunk/; revision=845
2004-03-19 16:53:04 +00:00
let
urls_ = if urls != [] then urls else [url];
in
stdenv.mkDerivation {
name =
if showURLs then "urls"
else if name != "" then name
else baseNameOf (toString (builtins.head urls_));
builder = ./builder.sh;
* The stdenv setup script now defines a generic builder that allows builders for typical Autoconf-style to be much shorten, e.g., . $stdenv/setup genericBuild The generic builder does lots of stuff automatically: - Unpacks source archives specified by $src or $srcs (it knows about gzip, bzip2, tar, zip, and unpacked source trees). - Determines the source tree. - Applies patches specified by $patches. - Fixes libtool not to search for libraries in /lib etc. - Runs `configure'. - Runs `make'. - Runs `make install'. - Strips debug information from static libraries. - Writes nested log information (in the format accepted by `log2xml'). There are also lots of hooks and variables to customise the generic builder. See `stdenv/generic/docs.txt'. * Adapted the base packages (i.e., the ones used by stdenv) to use the generic builder. * We now use `curl' instead of `wget' to download files in `fetchurl'. * Neither `curl' nor `wget' are part of stdenv. We shouldn't encourage people to download stuff in builders (impure!). * Updated some packages. * `buildinputs' is now `buildInputs' (but the old name also works). * `findInputs' in the setup script now prevents inputs from being processed multiple times (which could happen, e.g., if an input was a propagated input of several other inputs; this caused the size variables like $PATH to blow up exponentially in the worst case). * Patched GNU Make to write nested log information in the format accepted by `log2xml'. Also, prior to writing the build command, Make now writes a line `building X' to indicate what is being built. This is unfortunately often obscured by the gigantic tool invocations in many Makefiles. The actual build commands are marked `unimportant' so that they don't clutter pages generated by `log2html'. svn path=/nixpkgs/trunk/; revision=845
2004-03-19 16:53:04 +00:00
buildInputs = [curl];
urls = urls_;
# If set, prefer the content-addressable mirrors
# (http://nixos.org/tarballs) over the original URLs.
preferHashedMirrors = true;
# Compatibility with Nix <= 0.7.
id = md5;
# New-style output content requirements.
outputHashAlgo = if outputHashAlgo != "" then outputHashAlgo else
if sha256 != "" then "sha256" else if sha1 != "" then "sha1" else "md5";
outputHash = if outputHash != "" then outputHash else
if sha256 != "" then sha256 else if sha1 != "" then sha1 else md5;
impureEnvVars = [
# We borrow these environment variables from the caller to allow
# easy proxy configuration. This is impure, but a fixed-output
# derivation like fetchurl is allowed to do so since its result is
# by definition pure.
"http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy"
# This variable allows the user to pass additional options to curl
"NIX_CURL_FLAGS"
# This variable allows the user to override hashedMirrors from the
# command-line.
"NIX_HASHED_MIRRORS"
] ++ (map (site: "NIX_MIRRORS_${site}") sites);
inherit showURLs mirrorsFile;
}