nixpkgs/pkgs/development/tools/ocaml/utop/default.nix
2023-02-03 08:59:34 +01:00

94 lines
2.6 KiB
Nix

{ lib, stdenv, fetchurl, ocaml, findlib
, lambda-term, cppo, makeWrapper, buildDunePackage
, zed, logs, lwt, react, lwt_react
}:
let
switch =
if lib.versionAtLeast ocaml.version "4.08"
then
{
version = "2.10.0";
sha256 = "sha256-R10WovnqYcYCrDJnPuIQx2zHaPchSYfXDAaVMsJ4LQA=";
duneVersion = "3";
propagatedBuildInputs = [ findlib lambda-term zed logs ];
}
else
{
version = "2.9.2";
sha256 = "sha256-kvFBCe69TRQIWvZV47SH7ISus9k8afGRw5WLKzKqw08=";
duneVersion = "2";
propagatedBuildInputs = [ lambda-term ];
};
in
buildDunePackage rec {
pname = "utop";
inherit (switch) version duneVersion propagatedBuildInputs;
minimalOCamlVersion = "4.03";
src = fetchurl {
url = "https://github.com/ocaml-community/utop/releases/download/${version}/utop-${version}.tbz";
sha256 = switch.sha256;
};
nativeBuildInputs = [ makeWrapper cppo ];
postFixup =
let
path = "etc/utop/env";
# derivation of just runtime deps so env vars created by
# setup-hooks can be saved for use at runtime
runtime = stdenv.mkDerivation {
pname = "utop-runtime-env";
inherit version;
buildInputs = [ findlib ] ++ propagatedBuildInputs;
dontUnpack = true;
installPhase = ''
mkdir -p "$out"/${path}
for e in OCAMLPATH CAML_LD_LIBRARY_PATH; do
[[ -v "$e" ]] || continue
printf %s "''${!e}" > "$out"/${path}/$e
done
'';
};
get = key: ''$(cat "${runtime}/${path}/${key}")'';
in ''
for prog in "$out"/bin/*
do
# Note: wrapProgram by default calls 'exec -a $0 ...', but this
# breaks utop on Linux with OCaml 4.04, and is disabled with
# '--argv0 ""' flag. See https://github.com/NixOS/nixpkgs/issues/24496
wrapProgram "$prog" \
--argv0 "" \
--prefix CAML_LD_LIBRARY_PATH ":" "${get "CAML_LD_LIBRARY_PATH"}" \
--prefix OCAMLPATH ":" "${get "OCAMLPATH"}" \
--prefix OCAMLPATH ":" $(unset OCAMLPATH; addOCamlPath "$out"; printf %s "$OCAMLPATH") \
--add-flags "-I ${findlib}/lib/ocaml/${lib.getVersion ocaml}/site-lib"
done
'';
meta = {
description = "Universal toplevel for OCaml";
longDescription = ''
utop is an improved toplevel for OCaml. It can run in a terminal or in Emacs. It supports line edition, history, real-time and context sensitive completion, colors, and more.
It integrates with the tuareg mode in Emacs.
'';
homepage = "https://github.com/diml/utop";
license = lib.licenses.bsd3;
platforms = ocaml.meta.platforms or [];
maintainers = [
lib.maintainers.gal_bolle
];
};
}