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Handle cases with only data dependencies in pkg_tar#1044

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aiuto merged 3 commits intobazelbuild:mainfrom
tempoz:patch-1
Mar 17, 2026
Merged

Handle cases with only data dependencies in pkg_tar#1044
aiuto merged 3 commits intobazelbuild:mainfrom
tempoz:patch-1

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@tempoz tempoz commented Mar 9, 2026

If there is no base_path because there are no files, just use the empty string for the base_file_path.

The use case I have for this is packaging something of the following form:

filegroup(
    name = "foo_runfiles",
    data = [
        ":foo1",
        ":foo2",
        ":foo3",
        ":foo4",
    ],
)

pkg_tar(
    name = "foo_runfiles_tar",
    srcs = [ 
        ":foo_runfiles",
    ],  
    remap_paths = { 
        ".runfiles/": "%s.runfiles/" % BINARY_NAME,
    },  
    include_runfiles = True,
    package_dir = PACKAGE_ROOT,
)

Without this fix, I get the error:

ERROR: /home/user/workspace/BUILD:100:8: in pkg_tar_impl rule //:runfiles_tar:                                                                                                                                          
Traceback (most recent call last):                                                                                                                                                                                                                                                       
        File "/home/user/.cache/bazel/_bazel_user/4f6a42b622be4073a123bfbe9178017e/external/rules_pkg+/pkg/private/tar/tar.bzl", line 136, column 19, in _pkg_tar_impl                                                                                                                   
                add_label_list(mapping_context, srcs = ctx.attr.srcs)                                                                                                                                                                                                                    
        File "/home/user/.cache/bazel/_bazel_user/4f6a42b622be4073a123bfbe9178017e/external/rules_pkg+/pkg/private/pkg_files.bzl", line 374, column 34, in add_label_list                                                                                                                
                add_from_default_info(                                                                                                                                                                                                                                                   
        File "/home/user/.cache/bazel/_bazel_user/4f6a42b622be4073a123bfbe9178017e/external/rules_pkg+/pkg/private/pkg_files.bzl", line 440, column 52, in add_from_default_info                                                                                                         
                base_file = the_executable or all_files[0]                                                                                                                                                                                                                               
Error: index out of range (index is 0, but sequence has 0 elements)                                                                                                                                                                                                                      
ERROR: /home/user/workspace/BUILD:100:8: Analysis of target '//:runfiles_tar' (config: 3689c9b) failed                                                                                                                  
ERROR: Analysis of target '//:runfiles_tar' failed; build aborted

I am using version 1.2.0 of rules_pkg.

@tempoz
handle cases with only data dependencies in pkg_tar
7afdff9 
If there is no `base_path` because there are no files, just use the empty string for the `base_file_path`.
@tempoz tempoz requested review from aiuto and cgrindel as code owners March 9, 2026 17:28
tonyaiuto
tonyaiuto previously requested changes Mar 11, 2026
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can you add a test case for this.

@tempoz
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tempoz commented Mar 16, 2026

done!

@aiuto
Update BUILD
fbdb566 
Fix buildify lint
@aiuto aiuto merged commit 5449272 into bazelbuild:main Mar 17, 2026
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rdesgroppes added a commit to DataDog/datadog-agent that referenced this pull request Mar 20, 2026
@rdesgroppes
Bump rules_pkg for fixes: rpmbuild, symlink deletion
b9f52a0 
What does this PR do?
bump rules_pkg to Mar 17 main, picking up:
- bazelbuild/rules_pkg#1024: RPM build errors would go unnoticed without it
- bazelbuild/rules_pkg#1035: affects reproducibiliy of builds
- bazelbuild/rules_pkg#1044
- bazelbuild/rules_pkg#1046: a contribution of ours (@chouquette)
- bazelbuild/rules_pkg#1047: we might need this
@rdesgroppes rdesgroppes mentioned this pull request Mar 20, 2026
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gh-worker-dd-mergequeue-cf854d bot pushed a commit to DataDog/datadog-agent that referenced this pull request Mar 20, 2026
@rdesgroppes
Bump rules_pkg for fixes: rpmbuild errors, symlink deletion (#46783)
a44953e 
### What does this PR do?
Bump `rules_pkg` to current `main`.

### Motivation
Pick up:
- bazelbuild/rules_pkg#1021: a contribution of ours
- bazelbuild/rules_pkg#1024: RPM build errors would go unnoticed without it
- bazelbuild/rules_pkg#1035: affects reproducibiliy of builds
- bazelbuild/rules_pkg#1044
- bazelbuild/rules_pkg#1046: another contribution of ours (@chouquette)
- bazelbuild/rules_pkg#1047: we might need this feature

Co-authored-by: regis.desgroppes <regis.desgroppes@datadoghq.com>
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@aiuto aiuto aiuto approved these changes

@tonyaiuto tonyaiuto tonyaiuto left review comments

@cgrindel cgrindel Awaiting requested review from cgrindel cgrindel is a code owner

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@tempoz @aiuto @tonyaiuto