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copy_file: Do not add non-executables to default_runfiles (#326) 

copy_file currently includes the copied file in its runfiles even if it is not executable, which makes every rule depending on it have the file as a runfile (e.g. a `cc_library` depending on a copied header file via the hdrs attribute).

In an ideal world, according to https://docs.bazel.build/versions/main/skylark/rules.html#runfiles-features-to-avoid, `copy_file` would not need to specify any runfiles in the `DefaultInfo` it returns - specifying `files` should suffice. However, due to the existence of rules with legacy behavior, this would break compatibility (actually, already with `sh_test` in skylib's unit tests).

As a compromise that preserves compatibility with legacy rules but nevertheless cleans up the runfiles tree of depending rules, use the `data_runfiles` attribute of `DefaultInfo` if the copied file is not executable.
This commit is contained in:
Fabian Meumertzheim 2022-05-16 23:27:25 +02:00 committed by GitHub
parent 67bfa0ce4d
commit a832b8d717
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2 changed files with 8 additions and 2 deletions
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5
rules/private/copy_file_private.bzl
View File

@ -75,7 +75,10 @@ def _copy_file_impl(ctx):
if ctx.attr.is_executable:
return [DefaultInfo(files = files, runfiles = runfiles, executable = ctx.outputs.out)]
else:
return [DefaultInfo(files = files, runfiles = runfiles)]
# Do not include the copied file into the default runfiles of the
# target, but ensure that it is picked up by native rule's data
# attribute despite https://github.com/bazelbuild/bazel/issues/15043.
return [DefaultInfo(files = files, data_runfiles = runfiles)]
_ATTRS = {
"src": attr.label(mandatory = True, allow_single_file = True),

5
rules/private/write_file_private.bzl
View File

@ -37,7 +37,10 @@ def _common_impl(ctx, is_windows, is_executable):
if is_executable:
return [DefaultInfo(files = files, runfiles = runfiles, executable = ctx.outputs.out)]
else:
return [DefaultInfo(files = files, runfiles = runfiles)]
# Do not include the copied file into the default runfiles of the
# target, but ensure that it is picked up by native rule's data
# attribute despite https://github.com/bazelbuild/bazel/issues/15043.
return [DefaultInfo(files = files, data_runfiles = runfiles)]
def _impl(ctx):
return _common_impl(ctx, ctx.attr.is_windows, False)