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do not use system switch by default #3509

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c-cube opened this issue Aug 16, 2018 · 4 comments · May be fixed by #6307
Open

do not use system switch by default #3509

c-cube opened this issue Aug 16, 2018 · 4 comments · May be fixed by #6307
Milestone
2.4.0~alpha1

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@c-cube
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c-cube commented Aug 16, 2018

Sorry to start a discussion about that when y'all are busy with opam2. I think the "system" switch is the number 1 source of issues for beginners that try to use opam and come ask for help on #ocaml @ freenode; my advice is almost always to use a non-system switch and it fixes their issue. Therefore I think opam shouldn't use the system switch at all unless explicitly asked so.
@dra27
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dra27 commented Aug 17, 2018

There are various ideas in the pipeline for dealing with this once opam 2.0.0 is out of the door. In short, I think it's better to fix the (totally real and confusing) problems with system switches, rather than move towards stopping using them.

@AltGr
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AltGr commented Aug 17, 2018

Note that, on opam 2, the automatic switch selection is entirely defined by a customisable formula. So it would be a one-line change to enable/disable selecting system switches by default.

@Drup
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Drup commented Aug 17, 2018

Is there really a point in system switches now ? They cause so many issues and confusion and provide a really bad first impression to new users.

If the only point of system switches is to avoid recompilation, maybe efforts toward making them not suck would be better spend on having compilation cache in a usable state.

@kit-ty-kate kit-ty-kate linked a pull request Nov 20, 2024 that will close this issue
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@kit-ty-kate kit-ty-kate added this to the 2.4.0~alpha1 milestone Nov 20, 2024
@kit-ty-kate
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I opened #6307 to change this default

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Remove ocaml-system from the list of default compilers used during opam init kit-ty-kate/opam
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@Drup @AltGr @c-cube @kit-ty-kate @dra27