There was a edge case with the declaration of the `lsp` layer in `layers.el`
files.
The `hy` layer depends on the `python` layer which in turn depends on the `lsp`
layer if and only if the `python-backend` layer variable is set to `lsp`.
When the `hy` layer was declared first then it declares the `python` layer
without its layer variables, thus the `lsp` layer was not declared because the
`python-backend` variable was not set.
The fix is to gather all the layer dependencies and resolve them only after all
the used layers have been declared.
* new function `configuration-layer/declare-layer-dependencies`
* replace all calls to `configuration-layer/declare-layer` by the new function
except for distribution layers (we declare layer dependencies right away in
distribution layers)
Had to create dummy init functions at some places since the owner of a package
is the last layer that defines the init function of a package. And a package
can be installed only if it has an owner.
New functions in rst-sphinx:
- rst-sphinx-find-conf-py-path
- rst-sphinx-open-conf
- rst-sphinx-clean
- rst-sphinx-rebuild
Modified functions:
- rst-sphinx-compile takes now an optional argument to clean the project
- rst-sphinx-find-conf has been renamed to rst-sphinx-set-variables and now use
rst-sphinx-find-conf-py-path function
New key bindings:
- "cc" --> rst-sphinx-compile
- "cC" --> rst-sphinx-clean
- "cr" --> rst-sphinx-rebuild
- "gc" --> rst-sphinx-open-conf
- "o" --> rst-sphinx-target-open)))
