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README.nix.md

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Nix expressions are provided to ease building Qtah within Nixpkgs. Qtah can be inserted into Nixpkgs with the following overrides, after updating qtahDir as appropriate for your environment.

packageOverrides = pkgs:
  let qtahDir = /my/projects/qtah.git;
      qt = pkgs.qt5.qtbase;  # (Or pkgs.qt4.)
  in rec {
    haskellPackages = pkgs.haskellPackages.override {
      overrides = self: super: {
        qtah-generator = self.callPackage (qtahDir + /qtah-generator) {};
        qtah-cpp = self.callPackage (qtahDir + /qtah-cpp) { inherit qt; };
        qtah = self.callPackage (qtahDir + /qtah) { inherit qt; };
        qtah-examples = self.callPackage (qtahDir + /qtah-examples) {};
      };
    };
  };

The Haskell packages accept two optional parameters. enableSplitObjs, when non-null, will override Nixpkgs's default behaivour for Cabal, and the boolean forceParallelBuilding will force a parallel build for faster development, at the risk of nondeterministic results (see Nixpkgs bug 3220).

This file is part of Qtah.

Copyright 2015-2016 Bryan Gardiner [email protected]

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this program. If not, see http://www.gnu.org/licenses/.