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nixpkgs/pkgs/development/tools/ocaml/merlin/default.nix

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{ stdenv, fetchzip, ocaml, findlib, yojson, lib
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, withEmacsMode ? false, emacs }:
assert stdenv.lib.versionAtLeast (stdenv.lib.getVersion ocaml) "4.00";
let
version = "3.0.2";
in
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stdenv.mkDerivation {
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name = "merlin-${version}";
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src = fetchzip {
url = "https://github.com/ocaml/merlin/archive/v${version}.tar.gz";
sha256 = "0lcgafs5ip8vhvrp1d7yv6mzjsirmayd83cj4wwq6zxcrl7yv4x8";
};
buildInputs = [ ocaml findlib yojson ]
++ stdenv.lib.optional withEmacsMode emacs;
preConfigure = "mkdir -p $out/bin";
prefixKey = "--prefix ";
configureFlags = stdenv.lib.optional withEmacsMode "--enable-compiled-emacs-mode";
meta = with stdenv.lib; {
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description = "An editor-independent tool to ease the development of programs in OCaml";
homepage = http://the-lambda-church.github.io/merlin/;
license = licenses.mit;
maintainers = [ maintainers.vbgl ];
};
}