[PATCH v4 0/5] devtool: fix standalone clone conversion for nested git repos

[Jamin Lin <jamin_lin@aspeedtech.com>]

When a recipe has multiple git SRC_URI entries with destsuffix values
nested inside S, devtool modify left all but the top-level repo with a
.git/objects/info/alternates file pointing into the downloads cache.

Running 'bitbake -c cleanall' then removed those shared objects, breaking
all subsequent git operations in the workspace.
Fix git_convert_standalone_clone() to walk all git repos nested inside S
and repack each one to a fully standalone clone.

v1:
  - Fix git_convert_standalone_clone() to walk all git repos nested
    inside S and repack each one to a standalone clone
v2:
  - Add selftest recipe devtool-test-multi-destsuffix with six nested
    git SRC_URI entries to reproduce the scenario
  - Add test_devtool_modify_multi_git_destsuffix_standalone to verify
    all nested repos have their alternates removed after devtool modify
    and remain usable after 'bitbake -c cleanall'
v3:
  - Read SRC_URI directly instead of walking the tree for '.git' dirs -
    also fixes repos nested inside another repo's own working tree
  - Fix setup_git_repo() to register nested repos as submodules before
    the initial commit (was dead code), processing bottom-up to avoid
    stale submodule references
  - Fix commitIgnored() to skip committing when nothing is staged, so
    do_patch no longer fails on a submodule that's dirty only because
    of its own nested content
  - Simplify test recipe to three genuinely-nested destsuffix entries
    (level1/level1/level2/level1/level2/level3), update selftest to match
v4:
   - Fix regression from v3:
    setup_git_repo() now detects nested repos both for fresh workspace
    repos and for recipes whose source is already a git repo (fixes
    test_devtool_modify_nested_gitsm).

Jamin Lin (5):
  oe/patch: Skip commitIgnored when nothing is actually staged
  devtool: Register nested git repos before the initial commit
  devtool-source: Make nested destsuffix git repos standalone
  meta-selftest: Add devtool-test-multi-destsuffix recipe
  oeqa/selftest/devtool: Add test for multiple nested git destsuffix
    repos

 .../devtool-test-multi-destsuffix_git.bb      | 27 +++++++
 meta/classes/devtool-source.bbclass           | 16 ++++
 meta/lib/oe/patch.py                          | 12 +++
 meta/lib/oeqa/selftest/cases/devtool.py       | 64 +++++++++++++++
 scripts/lib/devtool/__init__.py               | 79 +++++++++++++------
 5 files changed, 175 insertions(+), 23 deletions(-)
 create mode 100644 meta-selftest/recipes-test/devtool/devtool-test-multi-destsuffix_git.bb

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2.43.0