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

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{ stdenv, fetchurl, ocaml, findlib, pkgconfig, gmp, perl }:
let
ocaml_version = (builtins.parseDrvName ocaml.name).version;
in
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assert stdenv.lib.versionAtLeast ocaml_version "3.12.1";
stdenv.mkDerivation rec {
name = "zarith-${version}";
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version = "1.3";
src = fetchurl {
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url = http://forge.ocamlcore.org/frs/download.php/1471/zarith-1.3.tgz;
sha256 = "1mx3nxcn5h33qhx4gbg0hgvvydwlwdvdhqcnvfwnmf9jy3b8frll";
};
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buildInputs = [ ocaml findlib pkgconfig perl ];
propagatedBuildInputs = [ gmp ];
patchPhase = ''
substituteInPlace ./z_pp.pl --replace '/usr/bin/perl' '${perl}/bin/perl'
'';
configurePhase = ''
./configure -installdir $out/lib/ocaml/${ocaml_version}/site-lib
'';
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;
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maintainers = with maintainers; [ thoughtpolice vbgl ];
};
}