David Allsopp

I'm suggesting that `jbuilder install` should not use `opam-installer` because we know there are buggy versions out there (and there will be for a while, because of LTS distros) but...

I've put the PR [through precheck](https://ci.inria.fr/ocaml/job/precheck/979/) just to test the couple of more obscure platforms available there, but good to merge once Changes is updated and that has passed.

With #157, I was able to build a tests-passing Zarith using MSVC 5.2.0 from opam and this `vcpkg.json`: ```json { "dependencies": [ "gmp" ], "builtin-baseline": "68d349964cb4e8da561fd849d9491e6ba11c5681", "overrides": [] } ```...

Just extraction a clearer repro: ``` opam pin --no-action add js_of_ocaml-compiler.dev . opam pin --no-action add js_of_ocaml-lwt.dev . opam pin --no-action add js_of_ocaml-ppx.dev . opam pin --no-action add js_of_ocaml-ppx_deriving_json.dev ....

The issue here is that local Git repos are first rsync'd and this happens for each pin. You'll see if you pin git+https://github.com/ocsigen/js_of_ocaml.git that it's much faster (especially on the...

(assigning @rjbou, as we can't remember why the rsync has to take place for a Git clone)

Just to note that this is blowing the `MAX_PATH` limit.

I have both a concrete reason for needing to do this (failing scenario added to the harness in #14014) and a follow-up branch which addresses it, which I expect to...

Indeed, the docs in flexdll are out of date w.r.t. `__declspec(dllimport)`. FlexDLL is showing its age, in that when it was first written Windows was still overwhelmingly 32-bit! Originally, the...

Are those failures with msvc64 or mingw-w64, @jonahbeckford? IIRC opam-repository-mingw "fixed" the binutils thing by forcing the base address for mingw-w64 instead, which means that this will be becoming a...