According to its website, the Ensime project has been shut down since 2019. We
have been supporting both Ensime and Metals for [a year and a
half](https://github.com/syl20bnr/spacemacs/pull/12234#issuecomment-524916394).
Ensime's GitHub repositories, including its Emacs integration, are archived.
Meanwhile, Metals has been developed actively, regularly releasing new versions.
It has stabilized significantly, and supports an increasingly full set of
features. Scala 3 is just around the corner, and the community is poised to make
the transition smoothly and relatively quickly. Metals supports it already,
whereas of course Ensime does not and never will. In fact, Scala 2 has had
several import minor versions released since Ensime died. Now that it's 2021,
it's time to cut the baggage we are carrying around for Ensime.
This feels like the natural place to put it, though we could also extend this
with other values in the future. I defaulted this behavior to off in order to
not impact folks' current setup.
Having an explicit dependency on lsp-treemacs for post-init-lsp-treemacs is no
longer necessary in the Scala layer, as lsp-metals superseeds it.
Removed lsp-metals-treeview-enable as it no longer exists.
As of Scala 2.13, Unicode arrows are deprecated:
* https://github.com/scala/scala/pull/7540
* https://github.com/scala/scala-dev/issues/585
* https://github.com/scala/bug/issues/11210
Using one will give a deprecation warnings like so:
> The unicode arrow `⇒` is deprecated, use `=>` instead. If you still wish to
> display it as one character, consider using a font with programming ligatures
> such as Fira Code.
As such the Scala layer's version slick capability to replace ASCII arrows with
Unicode ones is no longer useful, and I have removed it.
Based on my tests it doesn't seem that there is a need for a more graceful way
to deprecate this: i.e. nothing fails if there is extra junk in `:variables`.
The previous way of adding dap to a layer did add the mode
unconditionally to `spacemacs--dap-supported-modes` causing
dap bindings to be added also when no lsp backend was used.
Ensime seems to be finally dead, as ensime-mode is not longer
available on melpa. The same applies to ob-scala the package
which delivered scala support for org babel.
I have changed the layers default to metals and took care that
ensime is not tried to be installed until it is really selected
as a package.
In addition I have also fixed some smaller issues in the layer
which caused ensime specific settings to be forced even when
metals was selected as a backend.
I have also removed the not longer existing org-babel support
for scala as it requires ob-scala which in turn is based on ensime.
See https://github.com/hvesalai/emacs-scala-mode/issues/155 for details.
problem:
some layer packages lists have the open and closing parentheses on the same line
as the first and last listed package, but most seem to have them on a separate
lines.
solution:
put the open and close parentheses on separate lines, except for lists with only
a single package, they are written on the same line as the variable name and
parentheses.
fix the lists indentation
This reverts commit 29c78ce841 and all other fixes
that have been made afterwards.
The motivation is that use-package is seen by many as a replacement for
`require`. Is use-package always defer the loading of packages then is breaks
this use case, this does not respect POLA so even if it was making Spacemacs
loading faster (up to 3s faster on some startup on my machine) we just cannot
use it, it would be irresponsible. Spacemacs should be easy to use, loading
performance will come with time but it is not a priority.
The `scala-enable-eldoc` variable should be used to determine whether or not
ENSIME should print types at point. This makes sure that the hook is only set if
the variable is non-nil.
spacemacs/add-flycheck-hook was not really hooking anything, change the name
to better reflect what it does.
Also changed the push for a add-to-list to avoid duplicates.
Define multiple dispatch functions for each service:
- spacemacs//java-setup-backend
- spacemacs//java-setup-auto-completion
- spacemacs//java-setup-syntax-checking
- spacemacs//java-setup-spell-checking
- spacemacs//java-setup-eldoc
java: replace ensime-configure-keybindings function by a variable
It's not convenient to have key bindings in funcs.el file, instead of relying
on a function we define a private layer variable java--ensime-modes which
can be updated by other layers using a :pre-config use-package hook.
java: refactor key bindings
- define key bindings for meghanada back-end
- move ensime key bindings documentation from scala layer to java layer
- change SPC m d for daemon to SPC m D (since SPC m d is reserved for debugging)
Hook semantic is to be used with run-hooks API and run all hooks
sequentially, jump list semantic is different since the running
functions are not guaranteed to be executed so we prefer using regular
list API to manage jump-lists.
- Add option to disable by default
- Use local-vars hook to allow per-project enable/disable
- Don’t enable helm-gtags-mode (no need)
- Move emacs bindings from helm-gtags-mode-map to ggtags-mode-map
This commit defines:
- spacemacs-default-jump-handlers: a list of functions that can jump to
definition in ALL modes.
- spacemacs-jump-handlers-MODE: a list of functions that can jump to
definition in MODE.
- spacemacs-jump-handlers: a buffer-local list of functions that can
jump to definition. This is made up of the values of the two previous
variables whenever a given major mode is activated.
- spacemacs/jump-to-definition: a function that tries each function in
spacemacs-jump-handlers in order, and stops when one of them takes us
somewhere new.
- spacemacs|define-jump-handlers: a macro that
* defines spacemacs-jump-handlers-MODE, possibly filled with initial
functions
* defines a function that is added to the hook of the given MODE
* binds “SPC m g g” of that MODE to spacemacs/jump-to-definition
This is an attempt to harmonize all the different approaches to jumping.
Specifically,
- Existing intelligent jump packages that work for only a single mode
should go to the beginning of spacemacs-jump-handlers-MODE. E.g.
anaconda for python, ensime for scala, etc.
- Packages like gtags that work for several modes (but potentially not
all) and which is dumber than the intelligent jumpers should go the
the END of spacemacs-jump-handlers-MODE.
- Packages like dumb-jump that work for all modes should go to
spacemacs-default-jump-handlers.
In all cases the order of the jump handlers in each list should be from
most to least intelligent.
Fixes#6619
