Bazel fetch on nuget_repo no longer works post bazel 7.2.0

[LavaToaster]

Hi,

I'm trying to use this with bazel 8 and it appears as if there's some compat issues

If I upgrade the bazel version used in e2e/net8.0 and then run bazel fetch for the paket deps I get the following snippet from a much larger output

Log output

ERROR: /private/var/tmp/_bazel_adam/ecda83633f5cd2436ab4868e2f1f2ac2/external/+main_extension+paket.main/newtonsoft.json/13.0.3/BUILD.bazel:5:15: configurable attribute "deps" in @@+main_extension+paket.main//newtonsoft.json/13.0.3:13.0.3 doesn't match this configuration. Would a default condition help?

Conditions checked:
 @@rules_dotnet+//dotnet:tfm_net11
 @@rules_dotnet+//dotnet:tfm_net20
 @@rules_dotnet+//dotnet:tfm_net30
 @@rules_dotnet+//dotnet:tfm_net35
 @@rules_dotnet+//dotnet:tfm_net40
 @@rules_dotnet+//dotnet:tfm_net403
 @@rules_dotnet+//dotnet:tfm_net45
 @@rules_dotnet+//dotnet:tfm_net451
 @@rules_dotnet+//dotnet:tfm_net452
 @@rules_dotnet+//dotnet:tfm_net46
 @@rules_dotnet+//dotnet:tfm_net461
 @@rules_dotnet+//dotnet:tfm_net462
 @@rules_dotnet+//dotnet:tfm_net47
 @@rules_dotnet+//dotnet:tfm_net471
 @@rules_dotnet+//dotnet:tfm_net472
 @@rules_dotnet+//dotnet:tfm_net48
 @@rules_dotnet+//dotnet:tfm_net5.0
 @@rules_dotnet+//dotnet:tfm_net6.0
 @@rules_dotnet+//dotnet:tfm_net7.0
 @@rules_dotnet+//dotnet:tfm_net8.0
 @@rules_dotnet+//dotnet:tfm_net9.0
 @@rules_dotnet+//dotnet:tfm_netcoreapp1.0
 @@rules_dotnet+//dotnet:tfm_netcoreapp1.1
 @@rules_dotnet+//dotnet:tfm_netcoreapp2.0
 @@rules_dotnet+//dotnet:tfm_netcoreapp2.1
 @@rules_dotnet+//dotnet:tfm_netcoreapp2.2
 @@rules_dotnet+//dotnet:tfm_netcoreapp3.0
 @@rules_dotnet+//dotnet:tfm_netcoreapp3.1
 @@rules_dotnet+//dotnet:tfm_netstandard
 @@rules_dotnet+//dotnet:tfm_netstandard1.0
 @@rules_dotnet+//dotnet:tfm_netstandard1.1
 @@rules_dotnet+//dotnet:tfm_netstandard1.2
 @@rules_dotnet+//dotnet:tfm_netstandard1.3
 @@rules_dotnet+//dotnet:tfm_netstandard1.4
 @@rules_dotnet+//dotnet:tfm_netstandard1.5
 @@rules_dotnet+//dotnet:tfm_netstandard1.6
 @@rules_dotnet+//dotnet:tfm_netstandard2.0
 @@rules_dotnet+//dotnet:tfm_netstandard2.1

To see a condition's definition, run: bazel query --output=build <condition label>.

This instance of @@+main_extension+paket.main//newtonsoft.json/13.0.3:13.0.3 has configuration identifier 1f4b099. To inspect its configuration, run: bazel config 1f4b099.

For more help, see https://bazel.build/docs/configurable-attributes#faq-select-choose-condition.

I'm not sure where to start trying to debug this, so if you've any pointers would be happy to help out.

[LavaToaster]

It looks like this actualy started with bazel 7.2.0, bazel 7.1.1 is where it last works for me.

Probably related to this change

bazel fetch now more reliably fetches repos required for a build by triggering the analysis phase. (https://github.com/bazelbuild/bazel/pull/21841)

[purkhusid]

Do you have a small reproduction of this? I'm using Bazel 7.2 and I've not encountered these issues.

[purkhusid]

Could you try using the latest master to see if you still encounter this?

[LavaToaster]

I've checked out master and running

cd e2e/net8.0
bazel fetch @paket.main//...

still gives me the errors

It's worth noting, that it is able to fetch dependencies if it's done in context of a rule dependency.

[purkhusid]

Ah I see, I guess fetch does not work currently due to the transitions we use. Can you give me a bit more info on your use case for using fetch? I think fetch should work with rules_dotnet but it's probably going to require some thinking to work around the fact that we so heavily use transitions.

[purkhusid]

Relevant Bazel issue: bazelbuild/bazel#8565

[LavaToaster]

I don't really need it to work, I just came across it breaking when doing some comparisons between my code and this repo.

I've been writing something that works to read the packages.lock.json that nuget generates since for some reason paket doesn't really work for us when we try to make it mimic nuget behaviour of lowest dep. Also sprinkle in a bit of that with some gazelle auto generation of BUILD files.

Repo if you're interested https://github.com/LavaToaster/rules_dotnet_gazelle/tree/main/tools/gazelle/rules_dotnet

Note: It is not ready or good code 😅

[purkhusid]

Nice! I'm definitely interested! A Gazelle plugin has been on the roadmap for a long time so I'm very excited that somebody is looking into that