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* Write the list of mirrors to a file that we can reuse between

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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 (4.8 -> 4.2 seconds on nix-env -qa
  --out-path).

svn path=/nixpkgs/trunk/; revision=12695
This commit is contained in:
Eelco Dolstra 2008-08-22 15:53:21 +00:00
parent 4457e49a90
commit eebb241519
3 changed files with 34 additions and 16 deletions
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2
pkgs/build-support/fetchurl/builder.sh
View file

@ -1,5 +1,7 @@
source $stdenv/setup
source $mirrorsFile
if test -n "$showURLs"; then
header "downloading file $name with $outputHashAlgo hash $outputHash..."
fi

44
pkgs/build-support/fetchurl/default.nix
View file

@ -3,6 +3,30 @@
{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 ? ""
@ -36,23 +60,16 @@ let
urls_ = if urls != [] then urls else [url];
mirrors = import ./mirrors.nix;
# 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
stdenv.mkDerivation ({
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_;
@ -82,10 +99,5 @@ stdenv.mkDerivation ({
"NIX_HASHED_MIRRORS"
] ++ (map (site: "NIX_MIRRORS_${site}") sites);
inherit showURLs;
inherit showURLs mirrorsFile;
}
# Pass the mirror locations to the builder.
// mirrors
)

4
pkgs/build-support/fetchurl/write-mirror-list.sh Normal file
View file

@ -0,0 +1,4 @@
source $stdenv/setup
# !!! this is kinda hacky.
set | grep '^[a-zA-Z]\+=.*://' > $out