bug#56398: (guix git) fails to check out repos with nested submodules

[André Batista]

Hi!

ter 05 jul 2022 às 17:02:31 (1657051351), ludovic.courtes@inria.fr enviou:
> It seems that ‘update-cached-checkout’ fails to handle nested Git
> submodules, when a submodule itself has submodules:

I think this may be actually a bug upstream. When refreshing, guix is
able to recursively upgrade submodules under 'thirdparty/fbgemm' just
fine, but it fails on thirdparty/gloo because the path declared on
its .gitmodules does not exist on the repository:

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user@guix /src/guix.git$ cat 
~/.cache/guix/checkouts/orwu3gj6brdg2ui6r2tl5me7plucokpvqvgbhe2yuo6jc2tovvha/third_party/gloo/.gitmodules
[submodule "third-party/googletest"]
        path = third-party/googletest
        url = https://github.com/google/googletest.git
user@guix /src/guix.git$ ls 
~/.cache/guix/checkouts/orwu3gj6brdg2ui6r2tl5me7plucokpvqvgbhe2yuo6jc2tovvha/third_party/gloo/
cmake/  CMakeLists.txt  CODE_OF_CONDUCT.md  CONTRIBUTING.md  docs/  gloo/  
LICENSE  README.md  tools/
user@guix /src/guix.git$ cat 
~/.cache/guix/checkouts/orwu3gj6brdg2ui6r2tl5me7plucokpvqvgbhe2yuo6jc2tovvha/third_party/fbgemm/.gitmodules
[submodule "third_party/asmjit"]
        path = third_party/asmjit
        url = https://github.com/asmjit/asmjit.git
[submodule "third_party/cpuinfo"]
        path = third_party/cpuinfo
        url = https://github.com/pytorch/cpuinfo
[submodule "third_party/googletest"]
        path = third_party/googletest
        url = https://github.com/google/googletest
user@guix /src/guix.git$ ls 
~/.cache/guix/checkouts/orwu3gj6brdg2ui6r2tl5me7plucokpvqvgbhe2yuo6jc2tovvha/third_party/fbgemm/third_party/
asmjit/  asmjit.BUILD  cpuinfo/  cpuinfo.BUILD  googletest/
user@guix ~$ cat  
~/.cache/guix/checkouts/orwu3gj6brdg2ui6r2tl5me7plucokpvqvgbhe2yuo6jc2tovvha/.git/modules/third_party/gloo/config
[core]
        bare = false
        repositoryformatversion = 0
        filemode = true
        logallrefupdates = true
        worktree = ../../../../third_party/gloo/
[remote "origin"]
        url = https://github.com/facebookincubator/gloo
        fetch = +refs/heads/*:refs/remotes/origin/*
[branch "main"]
        remote = origin
        merge = refs/heads/main
user@guix ~$ cat  
~/.cache/guix/checkouts/orwu3gj6brdg2ui6r2tl5me7plucokpvqvgbhe2yuo6jc2tovvha/.git/modules/third_party/fbgemm/config
[core]
        bare = false
        repositoryformatversion = 0
        filemode = true
        logallrefupdates = true
        worktree = ../../../../third_party/fbgemm/
[remote "origin"]
        url = https://github.com/pytorch/fbgemm
        fetch = +refs/heads/*:refs/remotes/origin/*
[branch "main"]
        remote = origin
        merge = refs/heads/main
[submodule "third_party/asmjit"]
        url = https://github.com/asmjit/asmjit.git
[submodule "third_party/cpuinfo"]
        url = https://github.com/pytorch/cpuinfo
[submodule "third_party/googletest"]
        url = https://github.com/google/googletest

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