Move tuareg.install into the root dir and make it part of the tarball

Makefile

@@ -15,7 +15,7 @@ ELC = $(ELS:.el=.elc)
 INSTALL_FILES = $(ELS) $(ELC)
 INSTALL_DIR ?= $(shell opam config var share)/emacs/site-lisp
 
-DIST_FILES += $(ELS) Makefile README.md
+DIST_FILES += $(ELS) Makefile README.md tuareg.install
 
 EMACSFORMACOSX = /Applications/Emacs.app/Contents/MacOS/Emacs
 ifeq ($(wildcard $(EMACSFORMACOSX)),$(EMACSFORMACOSX))

opam/opam

@@ -11,8 +11,15 @@ authors: [
 homepage: "https://forge.ocamlcore.org/projects/tuareg/"
 bug-reports: "https://forge.ocamlcore.org/tracker/?group_id=43"
 dev-repo: "https://github.com/ocaml/tuareg.git"
-build: [make "tuareg-site-file.el"]
+build: [
+  [make "tuareg-site-file.el"]
+]
 depends: "caml-mode"
+depexts: [
+  [["debian"] ["emacs-nox"]]
+  [["ubuntu"] ["emacs-nox"]]
+  [["centos"]["emacs-nox"]]
+]
 post-messages: "
 If you have not yet done so, please add in ~/.emacs.d/init.el or
 in ~/.emacs to following line: