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* Rather than having the Nixpkgs config file as a flat set of

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configuration switches, it should be structured.  For instance,

  {
    firefox = {
      enableRealPlayer = true;
    };
    quake3 = {
      dataFiles = "/windows/D/Program Files/Quake 3/baseq3";
    }
  }

  Configuration switches can be obtained using the function getConfig,
  e.g., `getConfig ["firefox" "enableRealPlayer"] false'.

svn path=/nixpkgs/trunk/; revision=6596
This commit is contained in:
Eelco Dolstra 2006-09-24 18:59:49 +00:00
parent 21025cb280
commit ed58e70864
1 changed files with 15 additions and 5 deletions
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20
pkgs/top-level/all-packages.nix
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@ -77,12 +77,22 @@ rec {
useFromStdenv = hasIt: it: alternative: if hasIt then it else alternative;
# Return an attribute from nested attribute sets. For instance ["x"
# "y"] applied to some set e returns e.x.y, if it exists. The
# default value is returned otherwise.
getAttr = attrPath: default: e:
let {
attr = builtins.head attrPath;
body =
if attrPath == [] then e
else if builtins ? hasAttr && builtins.hasAttr attr e
then getAttr (builtins.tail attrPath) default (builtins.getAttr attr e)
else default;
};
# Return an attribute from the Nixpkgs configuration file, or
# a default value if the attribute doesn't exist.
getConfig = attr: default:
if builtins ? hasAttr && builtins.hasAttr attr config
then builtins.getAttr attr config
else default;
getConfig = attrPath: default: getAttr attrPath default config;
# The contents of the configuration file found at $NIXPKGS_CONFIG or
# $HOME/.nixpkgs/config.nix.
@ -2596,7 +2606,7 @@ rec {
flashplayer
]
# RealPlayer is disabled by default for legal reasons.
++ (if getConfig "enableRealPlayer" false then [RealPlayer] else [])
++ (if getConfig ["firefox" "enableRealPlayer"] false then [RealPlayer] else [])
++ (if blackdown != null then [blackdown] else []);
};