TL;DR Should get 20~25% speed improvement on startup, should get a big
improvement when using ivy or helm SPC h SPC. Users with layers.el files
in their layers must use `configuration-layer/declare-used-layer`
instead of `configuration-layer/declare-layer`
The implementation of the layer system made heavy use of `object-assoc`
and `object-assoc-list` functions which are not efficient. This PR
mainly replaces those object lists with hash maps in order to index the
objects by their name and achieve an O(1) access time.
The old object lists `configuration-layer--layers` and
`configuration-layer--packages` have been each by two variables each:
- `configuration-layer--indexed-layers` which is a hash-map of all the
layer objects and `configuration-layer--used-layers` which is a list of
all _used_ layers symbols,
- symmetrically `configuration-layer--indexed-packages` which is a
hash-map of all the package objects and
`configuration-layer--used-packages` which is a list of all _used_
packages symbols.
The hash map `configuration-layer--layer-paths` is gone, now we create
directly layer objects when discovering the layers and set the :dir
property. Note that previously the layer paths were the parent directory
of the layer, now :dir is the layer path.
The function `configuration-layer//make-layer` is now similar to its
counterpart `configuration-layer//make-package` in the sense that it
takes an optional `obj` to be able to override its properties.
The functions `configuration-layer/declare-layer` and
`configuration-layer/declare-layers` now takes an optional parameter
`usedp` in order to declare used or not used layers. For convenience
new functions have been added: `configuration-layer/declare-used-layer`
and `configuration-layer/declare-used-layers`, users _must_ update all
occurrences of `configuration-layer/declare-layer` by
`configuration-layer/declare-used-layers` in their `layers.el` files.
`helm-spacemacs-help` and `ivy-spacemacs-help` are updated to match the
changes in `core-configuration-layer.el`.
Rename some variables to make them more explicit:
`configuration-layer-no-layer` -> `configuration-layer-exclude-all-layers`
`configuration-layer-distribution` -> `configuration-layer-force-distribution`
- make it clear that setting dotspacemacs-default-font has no effect in
terminal
- make it clear that it's user responsibility to install Source Code Pro
font
* layers/+spacemacs/spacemacs-editing/packages.el (spacemacs-editing/init-origami):
add origami package and initialize it
* core/core-dotspacemacs.el (dotspacemacs-override-evil-folding): new
variable to allow choosing between different code folding methods.
Currently supported `evil' and `origami'
This new variable replace dotspacemacs-delete-orphan-packages
It defines the behaviour of Spacemacs when downloading packages.
Possible values are `used', `used-but-keep-unused' and `all'.
- `used' will download only explicitly used packages and remove any
unused packages as well as their dependencies.
- `used-but-keep-unused' will download only the used packages but won't
delete them if they become unused.
- `all' will download all the packages regardless if they are used or
not and packages won't be deleted by Spacemacs.
Default value is `used`.
Now Spacemacs will ask for layer installation when opening a file with
a known file type.
The auto-mode-alist entries are added by the file auto-layer.el in
the layers directory.
Easy insert of forms for lazy initialization can be done with the
interactive function configuration-layer//insert-lazy-install-form.
Change default value of dotspacemacs-enable-lazy-installation to t.
New function configuration-layer/lazy-install to add support for
lazy installation of layers based on auto-mode-alist emacs mechanism.
This is essentially the Prelude feature but translated at the layer
level for Spacemacs.
New dotspacemacs variable to enable this feature:
dotspacemacs-enable-lazy-installation
For now this variable is set to nil by default, it will be put to t when
the feature is stable.
POC with elixir layer.
People transitioning from Vim could be surprised if we set these
variable to t by default, so setting them to nil respects better
the POLA principle.
Impacted variables:
dotspacemacs-ex-substitute-global
dotspacemacs-remap-Y-to-y$
