feat: migrate to vim.lsp.config #3659

Problem:
Nvim 0.11 has vim.lsp.config, which mostly replaces the legacy
nvim-lspconfig "framework".

Solution:
Migrate all configs to `lsp/*` variants. The old configs in
`lua/lspconfig/` are "frozen".

The new configs include these changes:
- `commands` field became raw calls to
  `vim.api.nvim_buf_create_user_command` inside `on_attach`.
- `root_dir` became:
  - `root_markers` whenever the file list was simple didn't need to mach `*`
  - if the logic was complicated, or needed to match something like
    '\*.c', it was defined as a vim.lsp.Config `root_dir` callback.
- `on_config_change` became `before_init`. I don't actually know if this
  is the correct approach, but looking around the documentation of
  `nvim-lspconfig` a saw that it was defined as the function that gets
  called as soon as the config have `root_dir`, and so I thought
  `before_init` might be the closest alternative.
- `docs.description` became a luadoc `@brief` docstring.
- `single_file_support = false`?

Co-authored-by: Aliou Diallo <aliou@users.noreply.github.com>
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>

1 files changed, 69 insertions, 0 deletions

diff --git a/lsp/anakin_language_server.lua b/lsp/anakin_language_server.lua
new file mode 100644
index 00000000..9345edbc
--- /dev/null
+++ b/lsp/anakin_language_server.lua
@@ -0,0 +1,69 @@
+---@brief
+---
+---https://pypi.org/project/anakin-language-server/
+--
+-- `anakin-language-server` is yet another Jedi Python language server.
+--
+-- Available options:
+--
+-- * Initialization: https://github.com/muffinmad/anakin-language-server#initialization-option
+-- * Configuration: https://github.com/muffinmad/anakin-language-server#configuration-options
+return {
+  cmd = { 'anakinls' },
+  filetypes = { 'python' },
+  root_markers = {
+    'pyproject.toml',
+    'setup.py',
+    'setup.cfg',
+    'requirements.txt',
+    'Pipfile',
+    '.git',
+  },
+  settings = {
+    anakinls = {
+      pyflakes_errors = {
+        -- Full list: https://github.com/PyCQA/pyflakes/blob/master/pyflakes/messages.py
+
+        'ImportStarNotPermitted',
+
+        'UndefinedExport',
+        'UndefinedLocal',
+        'UndefinedName',
+
+        'DuplicateArgument',
+        'MultiValueRepeatedKeyLiteral',
+        'MultiValueRepeatedKeyVariable',
+
+        'FutureFeatureNotDefined',
+        'LateFutureImport',
+
+        'ReturnOutsideFunction',
+        'YieldOutsideFunction',
+        'ContinueOutsideLoop',
+        'BreakOutsideLoop',
+
+        'TwoStarredExpressions',
+        'TooManyExpressionsInStarredAssignment',
+
+        'ForwardAnnotationSyntaxError',
+        'RaiseNotImplemented',
+
+        'StringDotFormatExtraPositionalArguments',
+        'StringDotFormatExtraNamedArguments',
+        'StringDotFormatMissingArgument',
+        'StringDotFormatMixingAutomatic',
+        'StringDotFormatInvalidFormat',
+
+        'PercentFormatInvalidFormat',
+        'PercentFormatMixedPositionalAndNamed',
+        'PercentFormatUnsupportedFormat',
+        'PercentFormatPositionalCountMismatch',
+        'PercentFormatExtraNamedArguments',
+        'PercentFormatMissingArgument',
+        'PercentFormatExpectedMapping',
+        'PercentFormatExpectedSequence',
+        'PercentFormatStarRequiresSequence',
+      },
+    },
+  },
+}