wsalmonct opened a new issue, #2151:
URL: https://github.com/apache/buildstream/issues/2151
I'm trying to work out good ways to add some tests to a bst project
I thought about using some of the software inside a shell, this works for
basic `command --help` tests.
```
toolchain-2026-06-03 src # bst shell components/python3-mkdocs.bst -- mkdocs
--help
[--:--:--][ ][ main:core activity ] START
Loading elements
[00:00:00][ ][ main:core activity ] SUCCESS
Loading elements
[--:--:--][ ][ main:core activity ] START
Resolving elements
[00:00:00][ ][ main:core activity ] SUCCESS
Resolving elements
[--:--:--][ ][ main:core activity ] START
Initializing remote caches
[00:00:02][ ][ main:core activity ] SUCCESS
Initializing remote caches
[--:--:--][ ][ main:core activity ] START Query
cache
[00:00:00][ ][ main:core activity ] SUCCESS Query
cache
[--:--:--][d37eff3b][ main:components/python3-mkdocs.bst ] START
Staging dependencies
[00:00:00][d37eff3b][ main:components/python3-mkdocs.bst ] SUCCESS
Staging dependencies
[--:--:--][d37eff3b][ main:components/python3-mkdocs.bst ] START
Integrating sandbox
[00:00:00][d37eff3b][ main:components/python3-mkdocs.bst ] SUCCESS
Integrating sandbox
[--:--:--][d37eff3b][ main:components/python3-mkdocs.bst ] STATUS
Running command
mkdocs --help
Usage: mkdocs [OPTIONS] COMMAND [ARGS]...
MkDocs - Project documentation with Markdown.
Options:
-V, --version Show the version and exit.
-q, --quiet Silence warnings
-v, --verbose Enable verbose output
--color / --no-color Force enable or disable color and wrapping for the
output. Default is auto-detect.
-h, --help Show this message and exit.
Commands:
build Build the MkDocs documentation.
get-deps Show required PyPI packages inferred from plugins in mkdocs.yml.
gh-deploy Deploy your documentation to GitHub Pages.
new Create a new MkDocs project.
serve Run the builtin development server.
dcs-toolchain-2026-06-03 src #
```
but when i try to add a example project to use i need to use `--mount` which
triggers a bug for me
```
toolchain-2026-06-03 src # ls /src/tests/
config.yml index.md
toolchain-2026-06-03 src # bst shell components/python3-mkdocs.bst --mount
/src/tests/ -- mkdocs build
[--:--:--][ ][ main:core activity ] START
Loading elements
[00:00:00][ ][ main:core activity ] SUCCESS
Loading elements
[--:--:--][ ][ main:core activity ] START
Resolving elements
[00:00:00][ ][ main:core activity ] SUCCESS
Resolving elements
[--:--:--][ ][ main:core activity ] START
Initializing remote caches
[00:00:02][ ][ main:core activity ] SUCCESS
Initializing remote caches
[--:--:--][ ][ main:core activity ] START Query
cache
[00:00:00][ ][ main:core activity ] SUCCESS Query
cache
[--:--:--][d37eff3b][ main:components/python3-mkdocs.bst ] START
Staging dependencies
[00:00:00][d37eff3b][ main:components/python3-mkdocs.bst ] SUCCESS
Staging dependencies
[--:--:--][d37eff3b][ main:components/python3-mkdocs.bst ] START
Integrating sandbox
[00:00:00][d37eff3b][ main:components/python3-mkdocs.bst ] SUCCESS
Integrating sandbox
[--:--:--][ ][ main:core activity ] BUG The
directories marked in the sandbox must be absolute paths
Traceback (most recent call last):
File "/usr/sbin/bst", line 8, in <module>
sys.exit(cli())
~~~^^
File "/usr/lib/python3.13/site-packages/click/core.py", line 1442, in
__call__
return self.main(*args, **kwargs)
~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/buildstream/_frontend/cli.py",
line 282, in override_main
original_main(self, args=args, prog_name=prog_name,
complete_var=None, standalone_mode=standalone_mode, **extra)
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/click/core.py", line 1363, in
main
rv = self.invoke(ctx)
File "/usr/lib/python3.13/site-packages/click/core.py", line 1830, in
invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
File "/usr/lib/python3.13/site-packages/click/core.py", line 1226, in
invoke
return ctx.invoke(self.callback, **ctx.params)
~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/click/core.py", line 794, in
invoke
return callback(*args, **kwargs)
File "/usr/lib/python3.13/site-packages/click/decorators.py", line 46,
in new_func
return f(get_current_context().obj, *args, **kwargs)
File "/usr/lib/python3.13/site-packages/buildstream/_frontend/cli.py",
line 774, in shell
exitcode = app.stream.shell(
target,
...<9 lines>...
ignore_project_source_remotes=ignore_project_source_remotes,
)
File "/usr/lib/python3.13/site-packages/buildstream/_stream.py", line
360, in shell
return element._shell(
~~~~~~~~~~~~~~^
scope, mounts=mounts, isolate=isolate, prompt=prompt(element),
command=command, usebuildtree=usebuildtree
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/usr/lib/python3.13/site-packages/buildstream/element.py", line
2099, in _shell
sandbox.mark_directory(mount.path)
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
File
"/usr/lib/python3.13/site-packages/buildstream/sandbox/sandbox.py", line 168,
in mark_directory
assert directory.startswith("/"), "The directories marked in the
sandbox must be absolute paths"
~~~~~~~~~~~~~~~~~~~~^^^^^
AssertionError: The directories marked in the sandbox must be absolute
paths
```
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