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

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{ stdenv, lib, fetchFromGitHub, ocaml, findlib, ocamlbuild }:
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stdenv.mkDerivation ({
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version = "0.1";
name = "ocaml${ocaml.version}-seq-0.1";
meta = {
license = lib.licenses.lgpl21;
maintainers = [ lib.maintainers.vbgl ];
homepage = "https://github.com/c-cube/seq";
inherit (ocaml.meta) platforms;
};
} // (if lib.versionOlder ocaml.version "4.07" then {
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src = fetchFromGitHub {
owner = "c-cube";
repo = "seq";
rev = "0.1";
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sha256 = "1cjpsc7q76yfgq9iyvswxgic4kfq2vcqdlmxjdjgd4lx87zvcwrv";
};
buildInputs = [ ocaml findlib ocamlbuild ];
createFindlibDestdir = true;
meta.description = "Compatibility package for OCamls standard iterator type starting from 4.07";
} else {
src = ./src-base;
dontBuild = true;
installPhase = ''
mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib/seq
cp META $out/lib/ocaml/${ocaml.version}/site-lib/seq
'';
meta.description = "dummy backward-compatibility package for iterators";
}))