Better missing version error #248
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With @NathanReb's very valuable hint that I can get the rejection condition from |
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Do you think we could extract a test for this? That would also help seeing what the output looks like! |
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Yes, that's definitely the idea! Which is why I rebased on |
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This has the advantage that it will not fail when there aren't any FailsRestriction rejections.
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Thanks to @emillon for helping me debug this behavior of grep. Which is somewhat understandable (given grep adds a \n and with -z it is a \0) but extremely unhelpful.
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So I think this is ready for review. Adding these cram tests is quite rewarding and reasonably easy so I think overall they're a big win in documenting the behavior and making sure it doesn't get broken (and if it does, we will know about it). |
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This looks good, thanks!
I have a few comments code-wise.
I also think we should add a regression test for the original issue, the one with no dune compatible versions as well. That is, if for a package, no version build with dune and no version match the constraint, only the latter is reported.
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Also looking at the output, I think we should consider dropping the base diagnosis if we find such packages or packages that don't build with dune. We can do this in a separate PR but I'm curious to know what you think about such an approach! |
NathanReb
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NathanReb
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NathanReb
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Co-authored-by: Nathan Rebours <nathan.p.rebours@gmail.com>
Co-authored-by: Nathan Rebours <nathan.p.rebours@gmail.com>
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CHANGES: ### Added - Add opam extensions `x-opam-monorepo-opam-repositories` and `x-opam-monorepo-global-opam-vars` to make `lock` fully reproducible. (tarides/opam-monorepo#250, tarides/opam-monorepo#253, @NathanReb) - Show an error message when the solver can't find any version that satisfies the requested version constraint in the user's OPAM file (tarides/opam-monorepo#215, tarides/opam-monorepo#248, @Leonidas-from-XIV) - Allow packages to be marked as being provided by Opam and not to be pulled by `opam-monorepo`. To control this a new optional Opam file field, `x-opam-monorepo-opam-provided` is introduced. Its value is a list of package names that are to be excluded from being pulled (tarides/opam-monorepo#234, @Leonidas-from-XIV) - Show an error message when the OCaml version of the lock file does not match the OCaml version of the switch (tarides/opam-monorepo#267, tarides/opam-monorepo#268, @Leonidas-from-XIV) - Generate a `duniverse/README.md` file to explain the basics of `opam-monorepo` in the vendored directory (tarides/opam-monorepo#272, tarides/opam-monorepo#274, @Leonidas-from-XIV) - Add a `--prefer-cross-compile` flag for the solver to select cross-compiling versions of packages when available. This is determined through the presence of the `"cross-compile"` tag in the opam metadata. ### Changed - Bump lockfile version to 0.3 (tarides/opam-monorepo#285, @NathanReb) - Mark packages to be pulled by opam-monorepo with the `vendor` variable so using OPAM with `opam install --deps-only --locked .` will not install packages that will be installed with `opam-monorepo pull` (tarides/opam-monorepo#237, @Leonidas-from-XIV) ### Deprecated ### Fixed - Fix a bug where a package which had a single version that built with dune and got selected by the solver would be reported has having no version building with dune. (tarides/opam-monorepo#245, @Leonidas-from-XIV) - Fix the solver so it does not select beta versions of the compiler unless forced to by version constraints or `--ocaml-version`. (tarides/opam-monorepo#269, @NathanReb) ### Removed - Drop support for lockfile versions 0.2 and lower (tarides/opam-monorepo#285, @NathanReb) ### Security
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CHANGES: ### Added - Add opam extensions `x-opam-monorepo-opam-repositories` and `x-opam-monorepo-global-opam-vars` to make `lock` fully reproducible. (tarides/opam-monorepo#250, tarides/opam-monorepo#253, @NathanReb) - Show an error message when the solver can't find any version that satisfies the requested version constraint in the user's OPAM file (tarides/opam-monorepo#215, tarides/opam-monorepo#248, tarides/opam-monorepo#290 @Leonidas-from-XIV) - Allow packages to be marked as being provided by Opam and not to be pulled by `opam-monorepo`. To control this a new optional Opam file field, `x-opam-monorepo-opam-provided` is introduced. Its value is a list of package names that are to be excluded from being pulled (tarides/opam-monorepo#234, @Leonidas-from-XIV) - Show an error message when the OCaml version of the lock file does not match the OCaml version of the switch (tarides/opam-monorepo#267, tarides/opam-monorepo#268, @Leonidas-from-XIV) - Generate a `duniverse/README.md` file to explain the basics of `opam-monorepo` in the vendored directory (tarides/opam-monorepo#272, tarides/opam-monorepo#274, @Leonidas-from-XIV) - Add a `--prefer-cross-compile` flag for the solver to select cross-compiling versions of packages when available. This is determined through the presence of the `"cross-compile"` tag in the opam metadata. ### Changed - Bump lockfile version to 0.3 (tarides/opam-monorepo#285, @NathanReb) - Mark packages to be pulled by opam-monorepo with the `vendor` variable so using OPAM with `opam install --deps-only --locked .` will not install packages that will be installed with `opam-monorepo pull` (tarides/opam-monorepo#237, @Leonidas-from-XIV) ### Fixed - Fix a bug where a package which had a single version that built with dune and got selected by the solver would be reported has having no version building with dune. (tarides/opam-monorepo#245, @Leonidas-from-XIV) - Fix the solver so it does not select beta versions of the compiler unless forced to by version constraints or `--ocaml-version`. (tarides/opam-monorepo#269, @NathanReb) ### Removed - Drop support for lockfile versions 0.2 and lower (tarides/opam-monorepo#285, @NathanReb)
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I've continued to play around with what info can be retrieved from the map and with a bit of squinting (extracting the version restriction from another rejection case) I was able to test the version check on the packages that we exclude as not building with dune.
If I specify
fmt {>= "1.0.0"}in myopamfile I get this error message now:It is somewhat involved and hairy so I am not entirely sure whether this is worth it so I'm opening this PR as a draft, more of an RFC to see if we even want to do stuff this way or whether we should patch the 0install solver to expose better information instead.
Closes #215