feat: add pylyzer lsp config (#2548)

* feat(server_configurations): add pylyzer lsp config

Added a configuration for the pylyzer LSP. Made sure not to edit any
docs, only the Lua source code.

* style(linting): make the linter happy for pylyzer

Got an error that I can't use `util.path.dirname()` when finding the
root directory so I took that out.

* fix(pylyzer): windows support

Now checks for windows support and runs cmd.exe if it's running on
Windows.

* fix(pylyzer): no more linting errors

Fixed the linting errors even if I disagree with the style.

1 files changed, 40 insertions, 0 deletions

diff --git a/lua/lspconfig/server_configurations/pylyzer.lua b/lua/lspconfig/server_configurations/pylyzer.lua
new file mode 100644
index 00000000..5b90d494
--- /dev/null
+++ b/lua/lspconfig/server_configurations/pylyzer.lua
@@ -0,0 +1,40 @@
+local util = require('lspconfig').util
+
+local bin_name = 'pylyzer'
+local cmd = { bin_name, '--server' }
+
+if vim.fn.has 'win32' == 1 then
+  cmd = { 'cmd.exe', '/C', bin_name, '--server' }
+end
+
+return {
+  default_config = {
+    cmd = cmd,
+    filetypes = { 'python' },
+    root_dir = function(fname)
+      local root_files = {
+        'setup.py',
+        'tox.ini',
+        'requirements.txt',
+        'Pipfile',
+        'pyproject.toml',
+      }
+      return util.root_pattern(unpack(root_files))(fname) or util.find_git_ancestor(fname)
+    end,
+    settings = {
+      python = {
+        diagnostics = true,
+        inlayHints = true,
+        smartCompletion = true,
+        checkOnType = false,
+      },
+    },
+  },
+  docs = {
+    description = [[
+  https://github.com/mtshiba/pylyzer
+
+  `pylyzer`, a fast static code analyzer & language server for Python.
+    ]],
+  },
+}