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nixpkgs/doc/languages-frameworks/coq.xml
2019-09-18 22:12:54 +02:00

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<section xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xml:id="sec-language-coq">
<title>Coq</title>
<para>
Coq libraries should be installed in <literal>$(out)/lib/coq/${coq.coq-version}/user-contrib/</literal>. Such directories are automatically added to the <literal>$COQPATH</literal> environment variable by the hook defined in the Coq derivation.
</para>
<para>
Some extensions (plugins) might require OCaml and sometimes other OCaml packages. The <literal>coq.ocamlPackages</literal> attribute can be used to depend on the same package set Coq was built against.
</para>
<para>
Coq libraries may be compatible with some specific versions of Coq only. The <literal>compatibleCoqVersions</literal> attribute is used to precisely select those versions of Coq that are compatible with this derivation.
</para>
<para>
Here is a simple package example. It is a pure Coq library, thus it depends on Coq. It builds on the Mathematical Components library, thus it also takes <literal>mathcomp</literal> as <literal>buildInputs</literal>. Its <literal>Makefile</literal> has been generated using <literal>coq_makefile</literal> so we only have to set the <literal>$COQLIB</literal> variable at install time.
</para>
<programlisting>
{ stdenv, fetchFromGitHub, coq, mathcomp }:
stdenv.mkDerivation rec {
name = "coq${coq.coq-version}-multinomials-${version}";
version = "1.0";
src = fetchFromGitHub {
owner = "math-comp";
repo = "multinomials";
rev = version;
sha256 = "1qmbxp1h81cy3imh627pznmng0kvv37k4hrwi2faa101s6bcx55m";
};
buildInputs = [ coq ];
propagatedBuildInputs = [ mathcomp ];
installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
meta = {
description = "A Coq/SSReflect Library for Monoidal Rings and Multinomials";
inherit (src.meta) homepage;
license = stdenv.lib.licenses.cecill-b;
inherit (coq.meta) platforms;
};
passthru = {
compatibleCoqVersions = v: builtins.elem v [ "8.5" "8.6" "8.7" ];
};
}
</programlisting>
</section>