How to create an opam switch from a modified version of the compiler/stdlib?

UnixJunkie · April 1, 2021, 6:56am

Hello,

I need to test some changes to the stdlib.
How can I create a new opam switch using my modified version of the sources?

Thanks!
F.

UnixJunkie · April 1, 2021, 7:00am

ok, there is testing with opam in there:

ocaml/ocaml/blob/trunk/HACKING.adoc

= Hacking the compiler :camel:

This document is a work-in-progress attempt to provide useful
information for people willing to inspect or modify the compiler
distribution's codebase. Feel free to improve it by sending change
proposals for it.

If you already have a patch that you would like to contribute to the
official distribution, please see link:CONTRIBUTING.md[].

=== Your first compiler modification

1. Create a new git branch to store your changes.
+
----
git checkout -b my-modification
----
Usually, this branch wants to be based on `trunk`. If your changes must be on a
specific release, use its release branch (*not* the release tag) instead. For
example, to make a fix for 4.11.1, base your branch on *4.11* (not on *4.11.1*).

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mseri · April 1, 2021, 8:34am

There is also this option if you want to pin a specific commit: `opam switch create ocaml-variants.4.12.0+BS` - #9 by emillon

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How to create an opam switch from a modified version of the compiler/stdlib?

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