[Caml-list] opam and dune [Was: How to use -map]

[Ian Zimmerman <itz@very.loosely.org>]

On 2019-08-06 11:47, Ian Zimmerman wrote:

> So, for now, I'm sticking with Makefiles. :-P

I decided to give dune a try, mostly to give myself an excuse to
procrastinate with other projects.  After some rough going but being
able to figure it out, I hit what seems like an impassable strait.

dune generates the $package.opam file, therefore that file should not be
on version control.  _But_ then "opam pin ." insists on getting that
very file from the version control repo, instead of using the local one:

 matica!179 aaa$ opam pin .
[NOTE] Package aaa is already pinned to git+file:///home/itz/git/aaa#master (version 0.0.8~dev).
[aaa.0.0.8~dev] no changes from git+file:///home/itz/git/aaa#master
[WARNING] aaa's opam file has uncommitted changes, using the versioned one
aaa is now pinned to git+file:///home/itz/git/aaa#master (version 0.0.8~dev)
The following actions will be performed:
  - install aaa 0.0.8~dev*
Do you want to continue? [Y/n] y
[aaa.0.0.8~dev] synchronised from git+file:///home/itz/git/aaa#master

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
[ERROR] The compilation of aaa failed at "/home/itz/.local/packages/opam/opam-init/hooks/sandbox.sh build dune
        subst".

#=== ERROR while compiling aaa.0.0.8~dev ======================================#
# context     2.0.4 | linux/x86_64 | ocaml-base-compiler.4.07.1 | pinned(git+file:///home/itz/git/aaa#master#193ad3bd)
# path        ~/.local/packages/opam/default/.opam-switch/build/aaa.0.0.8~dev
# command     ~/.local/packages/opam/opam-init/hooks/sandbox.sh build dune subst
# exit-code   1
# env-file    ~/.local/packages/opam/log/aaa-10257-b76d46.env
# output-file ~/.local/packages/opam/log/aaa-10257-b76d46.out
### output ###
# Error: No <package>.opam files found.



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - build aaa 0.0.8~dev
+- 
- No changes have been performed

So how do you get around this?

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