Qinusty authored Aug 03, 2018 and Qinusty committed Aug 15, 2018

This allows for users to configure fatal-warnings to be either a list of
warnings.

This commit deprecates the use of fail-on-overlap within project.conf,
this will now use the fatal-warnings configuration item.

element.py: Cache key calculation now takes into account all of the
fatal-warnings

tests: This modifys the tests/frontend/overlaps.py tests to support the
new fatal-warnings configuration. Backwards compatibility is also
tested for `fail-on-overlap`

_versions.py: BST_FORMAT_VERSION bumped to 15 for fatal-warnings
	      BST_CORE_ARTIFACT_VERSION bumpted to 5 for fatal-warnings

Fixes: #526

Qinusty authored Aug 09, 2018 and Qinusty committed Aug 15, 2018

This follows the implementation of configurable warnings.

Qinusty authored Aug 08, 2018 and Qinusty committed Aug 15, 2018

This includes detailing the use of `fatal-warnings` within project.conf

Qinusty authored Aug 09, 2018 and Qinusty committed Aug 15, 2018

This adds multiple tests for custom plugin warnings and core warnings,
providing checks for both cases which should cause warnings and errors
when configured as fatal.

Also adds tests for cache key calculations.

Configurable Warnings

Closes #526

See merge request !627

Source plugin implementations can now specify that they need access to
previously staged sources by specifying
`BST_REQUIRES_PREVIOUS_SOURCES_TRACK` and/or
`BST_REQUIRES_PREVIOUS_SOURCES_FETCH`, corresponding to access at `track`
and `fetch` times respectively.

Fixes #381.

Replaces !505. For relevant discussion, see this discussion:
!505 (comment 83780747)

`pip` source plugin can stage python packages that are either specified
directly in the element definition or picked up from `requirements.txt`
from previous sources. In order to support the latter use-case
(which is also the primary motivation for this plugin), this plugin
requires access to previous sources and hence is an example of a
Source Transform source.

Also, bump `BST_FORMAT_VERSION` as this patch adds a new core plugin.