The behavior of __assert_cached() was changed when the keystrength
parameter was introduced. This restores the previous behavior.

Fixes #607.

Fixes: 3d308894 ("element.py: Cache the result of checking whether...")

Test rebuild that requires staging of weakly cached dependency.

This is a regression test for #607.

element.py: Fix cache check in non-strict mode

Closes #607

See merge request !822

This adds directory objects to the local repository before downloading
files in the directory. However, artifact references are still stored
only after downloading the complete directory and thus, there won't be
dangling references. This will anyway be required for partial download
support.

gRPC can handle 1 MiB payloads. Increase size limit from 64 KiB to speed
up uploads.`

Use 1 MiB as payload size limit on the server side for both individual
downloads and batch uploads.

This uses BatchReadBlobs instead of individual blob download to speed up
artifact pulling, if the server supports it.

Fixes #554.

_artifactcache/cascache.py: Use BatchReadBlobs

Closes #554

See merge request !813

Also update the documentation for get_virtual_directory to make the
implications of using both methods clearer.

Stop caching virtual directories if get_directory is used.

See merge request !818

This has been moved from app.py
As it will have different functionality depending on platform
Once the Darwin (MacOS) platform is added

Removed `resource.setrlimit()` functionality from app.py
Added `resource.setrlimit()` functionality to platform.py as function

_platform/linux.py: Add FUSE check
Without this check, WSL would error upon finding FUSE missing
This must be bypassed to allow remote execution

This is due to Darwin (MacOS) having a different Max-Jobs limit
_platform/platform.py: Adding max-jobs call

_project.py: redirected 'max-jobs' to point at the platform

This was done so a default exists, but allows platforms to override as needed

_platform/platform.py: Added CAS call function

_platform/linux.py: Added override to CAS call
_platform/unix.py: Remove CAS call

This is to allow platforms that do not support sandboxing
To error is a controlled/known way

Adding functionality to recognise Darwin as a platform in plaform.py

non-Linux platforms don't return EISDIR when attempting to unlink a directory

Stopped safe_remove attempting to unlink dirs
Previously safe_remove would attempt to unlink a path
Before attempting to remove it if it was a dir

Now it checks for a dir before that step

  - This patch was required due to not being able to execute `bst` on
  a Linux machine without Fuse or Bubblewrap available

If no workspaces were found, bst workspace would return `[]`
This has been changed to a nicer message