Go importer doesn't know MODULE/vX.Y version tags

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2 participants

Timo Wilken
Simon Tournier

Owner: unassigned

Submitted by: Timo Wilken

Severity: normal

Timo Wilken wrote on 21 Apr 2023 19:39

Recipients:(address . bug-guix@gnu.org)

Message-ID:CS2M99VHXHVN.WOF38A5PXLE9@lap.twilken.net

Some Golang repositories apparently use a tagging scheme where each
submodule in the repo gets its own tags.

In this case, the example is cloud.google.com/go and its submodules
(hosted at https://github.com/googleapis/google-cloud-go).

For example, for the cloud.google.com/go/longrunning submodule at
version 0.4.1, the Go importer should look for a tag called
"refs/tags/longrunning/v0.4.1" in the Git repository.

#+begin_example
$ guix import go -r cloud.google.com/go/longrunning
Backtrace:
          19 (primitive-load "/home/timo/.config/guix/current/bin/gu…")
In guix/ui.scm:
   2300:7 18 (run-guix . _)
  2263:10 17 (run-guix-command _ . _)
In guix/scripts/import.scm:
    89:11 16 (guix-import . _)
In ice-9/boot-9.scm:
  1752:10 15 (with-exception-handler _ _ #:unwind? _ # _)
In guix/scripts/import/go.scm:
   114:22 14 (_)
In guix/import/utils.scm:
   638:27 13 (recursive-import _ #:repo->guix-package _ #:guix-name . #)
   630:33 12 (lookup-node "cloud.google.com/go/longrunning" #f)
In guix/memoization.scm:
     98:0 11 (mproc "cloud.google.com/go/longrunning" # #<procedure…> …)
In unknown file:
          10 (_ #<procedure 7fb3e173c820 at guix/memoization.scm:17…> …)
In guix/import/go.scm:
   685:10  9 (_ _ #:version _ #:repo _)
In ice-9/exceptions.scm:
   406:15  8 (go-module->guix-package* . _)
In ice-9/boot-9.scm:
  1752:10  7 (with-exception-handler _ _ #:unwind? _ # _)
In guix/import/go.scm:
   511:19  6 (go-module->guix-package "cloud.google.com/go/longrunn…" …)
In guix/git.scm:
    291:4  5 (update-cached-checkout _ #:ref _ #:recursive? _ # _ # _ …)
   277:19  4 (resolve _)
In git/reference.scm:
     60:8  3 (_ _ _)
In git/bindings.scm:
     77:2  2 (raise-git-error _)
In ice-9/boot-9.scm:
  1685:16  1 (raise-exception _ #:continuable? _)
  1683:16  0 (raise-exception _ #:continuable? _)

ice-9/boot-9.scm:1683:16: In procedure raise-exception:
Git error: reference 'refs/tags/v0.4.1' not found
#+end_example

The same is true for other modules, e.g.
github.com/Azure/azure-sdk-for-go/sdk/internal, where the tag is
called "refs/tags/sdk/internal/v1.3.0" instead:

#+begin_example
$ guix import go -r github.com/Azure/azure-sdk-for-go/sdk/internal
Backtrace:
          19 (primitive-load "/home/timo/.config/guix/current/bin/gu…")
In guix/ui.scm:
   2300:7 18 (run-guix . _)
  2263:10 17 (run-guix-command _ . _)
In guix/scripts/import.scm:
    89:11 16 (guix-import . _)
In ice-9/boot-9.scm:
  1752:10 15 (with-exception-handler _ _ #:unwind? _ # _)
In guix/scripts/import/go.scm:
   114:22 14 (_)
In guix/import/utils.scm:
   638:27 13 (recursive-import _ #:repo->guix-package _ #:guix-name . #)
   630:33 12 (lookup-node "github.com/Azure/azure-sdk-for-go/sdk/in…" …)
In guix/memoization.scm:
     98:0 11 (mproc "github.com/Azure/azure-sdk-for-go/sdk/internal" …)
In unknown file:
          10 (_ #<procedure 7fa449ec0300 at guix/memoization.scm:17…> …)
In guix/import/go.scm:
   685:10  9 (_ _ #:version _ #:repo _)
In ice-9/exceptions.scm:
   406:15  8 (go-module->guix-package* . _)
In ice-9/boot-9.scm:
  1752:10  7 (with-exception-handler _ _ #:unwind? _ # _)
In guix/import/go.scm:
   511:19  6 (go-module->guix-package "github.com/Azure/azure-sdk-f…" …)
In guix/git.scm:
    291:4  5 (update-cached-checkout _ #:ref _ #:recursive? _ # _ # _ …)
   277:19  4 (resolve _)
In git/reference.scm:
     60:8  3 (_ _ _)
In git/bindings.scm:
     77:2  2 (raise-git-error _)
In ice-9/boot-9.scm:
  1685:16  1 (raise-exception _ #:continuable? _)
  1683:16  0 (raise-exception _ #:continuable? _)

ice-9/boot-9.scm:1683:16: In procedure raise-exception:
Git error: reference 'refs/tags/v1.3.0' not found
#+end_example

Timo Wilken wrote on 17 Jun 2023 17:12

Re: bug#63631: [PATCH] import: go: Handle subpackage versioning correctly.

Recipients:(name . Ludovic Courtès)(address . ludo@gnu.org)

Message-ID:CTF06XBYWPT0.1MV6QA1B2OB98@lap.twilken.net

Hi Ludo', (hi everyone,)

On Wed Jun 14, 2023 at 11:09 PM CEST, Ludovic Courtès wrote:

Toggle quote (11 lines)> Timo Wilken <guix@twilken.net> skribis:
> > Here's a patch that fixes the reported issue (bug#54097) for me. I've only
> > tested this on the github.com/googleapis/google-cloud-go/compute package so
> > far, though it seems to work there. Perhaps others have more testcases?
> >
> > I don't know enough about Go tooling to use it, so I've just patched the Guile
> > logic of the importer. (I don't write Go, I just want to package stuff written
> > in it.) In terms of performance, at least the repo contents are apparently
> > cached by the first `git-checkout-hash' call, even if it fails, so the second
> > call doesn't have to redownload them.

I've been testing my patch further this weekend, and I have a couple more

patches in the pipeline; I suppose I ought to clean those up and submit them.

In particular, I've got fixes for the following queued up locally:

1. Finding the `module-path-subdir' needs another case for e.g.

cloud.google.com/go/*.

2. My patch sometimes generates an unnecessary `go-version->git-ref' call.

3. Go versions need to be parsed from go.mod, since some packages require a

newer Go compiler than our default. This I've got a patch for, but this Go

version also ought to propagate up the dependency tree. I haven't found an

easy way to do that, since the importer seems to generate top-level

packages first, before descending the dep tree...

4. `fetch-module-meta-data' ought to ignore 4xx HTTP errors to follow the

spec; gonum.org/v1/gonum specifically depends on this behaviour.

I've been trying to recursively import github.com/matrix-org/dendrite, which

has a particularly large and hairy dependency tree. While I can now import it

without crashes, I can't build it from the imported package definitions yet --

mainly because of lots of dependency cycles in the generated packages, but

there may be more issues hidden beneath that.

Still, I can recommend it as a test of everyone's importer patches, since

it'll find a lot of edge cases in importing alone!

Toggle quote (3 lines)

> What you propose looks similar to part of the work Simon Tournier

> submitted at <https://issues.guix.gnu.org/63647>.

It seems lots of people have been working on the same problem -- in addition

to Simon's patches, I found a patch submitted by Elbek (issues 64035 & 64036;

Cc'd). I also forgot about the issue I submitted months ago (63001)...

Toggle quote (2 lines)

> What would you suggest? Simon?

Here's a brief comparison between Simon's patches and mine -- Simon's seem to

contain fixes for a couple more things than mine currently does:

1. Simon sorts available versions in an error message; this can presumably be

merged independently since it doesn't conflict with other patches.

2. Simon always prepends a "SUBDIR/" prefix to the tag if found, whereas I try

to find the plain "vX" tag first, then fall back to "SUBDIR/vX". Judging by

https://go.dev/ref/mod#vcs-version,Simon's approach seems more correct.

I'll change my implementation to match and try it out.

3. For detecting the `module-path-subdirectory' in Simon's patches: that's the

same approach I used initially, but I found I have to try `(substring

module-path (string-length import-prefix))' first (to handle e.g.

cloud.google.com/go/*). This is one of the things I haven't submitted

yet...

Toggle quote (2 lines)

> Thanks for the patch, Timo!

Thanks for your work in sorting through all of this, Ludo'!

Cheers,

Timo

Simon Tournier wrote on 16 Aug 2023 17:59

Re: bug#63001: bug#63631: [PATCH] import: go: Handle subpackage versioning correctly.

Recipients:

Message-ID:875y5ff05i.fsf@gmail.com

Hi Timo,

On Sat, 17 Jun 2023 at 17:12, "Timo Wilken" <guix@twilken.net> wrote:

Toggle quote (19 lines)>> What would you suggest?  Simon?
>
> Here's a brief comparison between Simon's patches and mine -- Simon's seem to
> contain fixes for a couple more things than mine currently does:
>
> 1. Simon sorts available versions in an error message; this can presumably be
>    merged independently since it doesn't conflict with other patches.
>
> 2. Simon always prepends a "SUBDIR/" prefix to the tag if found, whereas I try
>    to find the plain "vX" tag first, then fall back to "SUBDIR/vX". Judging by
>    https://go.dev/ref/mod#vcs-version, Simon's approach seems more correct.
>    I'll change my implementation to match and try it out.
>
> 3. For detecting the `module-path-subdirectory' in Simon's patches: that's the
>    same approach I used initially, but I found I have to try `(substring
>    module-path (string-length import-prefix))' first (to handle e.g.
>    cloud.google.com/go/*). This is one of the things I haven't submitted
>    yet...

Sorry if I have missed some patches or overlooked something. Do you

plan to send another patch series handling all?

Cheers,

simon

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