80 lines
2.3 KiB
Nix
80 lines
2.3 KiB
Nix
{ lib, stdenv, fetchurl, ocaml, findlib
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, lambdaTerm, cppo, makeWrapper, buildDunePackage
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}:
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if !lib.versionAtLeast ocaml.version "4.03"
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then throw "utop is not available for OCaml ${ocaml.version}"
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else
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buildDunePackage rec {
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pname = "utop";
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version = "2.8.0";
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useDune2 = true;
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src = fetchurl {
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url = "https://github.com/ocaml-community/utop/releases/download/${version}/utop-${version}.tbz";
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sha256 = "0mi571ifjzq4wcjarn8q1b7yl8nxjm1jfx3afac224lqwn6bhb2d";
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};
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nativeBuildInputs = [ makeWrapper ];
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buildInputs = [ cppo ];
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propagatedBuildInputs = [ lambdaTerm ];
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postFixup =
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let
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path = "etc/utop/env";
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# derivation of just runtime deps so env vars created by
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# setup-hooks can be saved for use at runtime
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runtime = stdenv.mkDerivation {
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pname = "utop-runtime-env";
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inherit version;
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buildInputs = [ findlib ] ++ propagatedBuildInputs;
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phases = [ "installPhase" ];
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installPhase = ''
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mkdir -p "$out"/${path}
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for e in OCAMLPATH CAML_LD_LIBRARY_PATH; do
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[[ -v "$e" ]] || continue
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printf %s "''${!e}" > "$out"/${path}/$e
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done
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'';
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};
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get = key: ''$(cat "${runtime}/${path}/${key}")'';
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in ''
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for prog in "$out"/bin/*
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do
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# Note: wrapProgram by default calls 'exec -a $0 ...', but this
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# breaks utop on Linux with OCaml 4.04, and is disabled with
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# '--argv0 ""' flag. See https://github.com/NixOS/nixpkgs/issues/24496
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wrapProgram "$prog" \
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--argv0 "" \
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--prefix CAML_LD_LIBRARY_PATH ":" "${get "CAML_LD_LIBRARY_PATH"}" \
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--prefix OCAMLPATH ":" "${get "OCAMLPATH"}" \
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--prefix OCAMLPATH ":" $(unset OCAMLPATH; addOCamlPath "$out"; printf %s "$OCAMLPATH") \
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--add-flags "-I ${findlib}/lib/ocaml/${lib.getVersion ocaml}/site-lib"
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done
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'';
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meta = {
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description = "Universal toplevel for OCaml";
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longDescription = ''
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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.
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It integrates with the tuareg mode in Emacs.
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'';
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homepage = "https://github.com/diml/utop";
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license = lib.licenses.bsd3;
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platforms = ocaml.meta.platforms or [];
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maintainers = [
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lib.maintainers.gal_bolle
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];
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};
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}
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