obytelib.1.6 fails to build with opam: /usr/lib/ocaml/../../bin/ocamlbuild: No such file or directory

[nathanfarlow]

Looks like this line in configure is incorrect:

obytelib/configure

Line 29 in af5b5c9

OCAMLBUILD="$(ocamlc -where)/../../bin/ocamlbuild"

Maybe because ocamlbuild doesn't ship with OCaml anymore?

Some relevant commands:

nathan@laptop:~$ ocamlc -where
/usr/lib/ocaml
nathan@laptop:~$ ocamlbuild -where
/home/nathan/.opam/default/lib/ocamlbuild
nathan@laptop:~$ which ocamlbuild
/home/nathan/.opam/default/bin/ocamlbuild
nathan@laptop:~$ opam --version
2.1.2
nathan@laptop:~$ ocaml -version
The OCaml toplevel, version 4.13.1

Note that ocamlbuild is in my path by default when installing through opam

Full error:

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
⬇ retrieved obytelib.1.6  (cached)
⬇ retrieved ocamlclean.2.3  (cached)
[ERROR] The compilation of obytelib.1.6 failed at "make all".

#=== ERROR while compiling obytelib.1.6 =======================================#
# context     2.1.2 | linux/x86_64 | ocaml.4.13.1 | https://opam.ocaml.org#92063b79
# path        ~/.opam/default/.opam-switch/build/obytelib.1.6
# command     ~/.opam/opam-init/hooks/sandbox.sh build make all
# exit-code   2
# env-file    ~/.opam/log/obytelib-40251-12e8b4.env
# output-file ~/.opam/log/obytelib-40251-12e8b4.out
### output ###
# cp ../etc/prim.ml prim.ml
# cp ../etc/config.ml config.ml
# /usr/lib/ocaml/../../bin/ocamlbuild -cflags -w,@a-4-70,-warn-error,A,-safe-string,-strict-formats,-strict-sequence -lflags -w,@a-4-70,-warn-error,A,-safe-string,-strict-formats,-strict-sequence -no-links -classic-display -cflag -g -lflag -g oByteLib.cmi
# make[1]: /usr/lib/ocaml/../../bin/ocamlbuild: No such file or directory
# make[1]: *** [Makefile:25: _build/oByteLib.cmi] Error 127
# make: *** [Makefile:15: all] Error 2

The package installs correctly if I introduce the symlink ln /home/nathan/.opam/default/bin/ocamlbuild /usr/bin/ocamlbuild