nixpkgs/pkgs/development/ocaml-modules/zarith/default.nix

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{ stdenv, fetchurl, ocaml, findlib, pkgconfig, gmp, perl }:
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assert stdenv.lib.versionAtLeast ocaml.version "3.12.1";
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let param =
if stdenv.lib.versionAtLeast ocaml.version "4.02"
then {
version = "1.4.1";
url = http://forge.ocamlcore.org/frs/download.php/1574/zarith-1.4.1.tgz;
sha256 = "0l36hzmfbvdai2kcgynh13vfdim5x2grnaw61fxqalyjm90c3di3";
} else {
version = "1.3";
url = http://forge.ocamlcore.org/frs/download.php/1471/zarith-1.3.tgz;
sha256 = "1mx3nxcn5h33qhx4gbg0hgvvydwlwdvdhqcnvfwnmf9jy3b8frll";
};
in
stdenv.mkDerivation rec {
name = "zarith-${version}";
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inherit (param) version;
src = fetchurl {
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inherit (param) url sha256;
};
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buildInputs = [ ocaml findlib pkgconfig perl ];
propagatedBuildInputs = [ gmp ];
patchPhase = "patchShebangs ./z_pp.pl";
configurePhase = ''
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./configure -installdir $out/lib/ocaml/${ocaml.version}/site-lib
'';
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preInstall = "mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib";
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meta = with stdenv.lib; {
description = "Fast, arbitrary precision OCaml integers";
homepage = "http://forge.ocamlcore.org/projects/zarith";
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license = licenses.lgpl2;
platforms = ocaml.meta.platforms or [];
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maintainers = with maintainers; [ thoughtpolice vbgl ];
};
}