+" Author: aurieh <me@aurieh.me>
+" Description: A language server for Python
+
+call ale#Set('python_pylsp_executable', 'pylsp')
+call ale#Set('python_pylsp_options', '')
+call ale#Set('python_pylsp_use_global', get(g:, 'ale_use_global_executables', 0))
+call ale#Set('python_pylsp_auto_pipenv', 0)
+call ale#Set('python_pylsp_auto_poetry', 0)
+call ale#Set('python_pylsp_auto_uv', 0)
+call ale#Set('python_pylsp_config', {})
+
+function! ale_linters#python#pylsp#GetExecutable(buffer) abort
+ if (ale#Var(a:buffer, 'python_auto_pipenv') || ale#Var(a:buffer, 'python_pylsp_auto_pipenv'))
+ \ && ale#python#PipenvPresent(a:buffer)
+ return 'pipenv'
+ endif
+
+ if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_pylsp_auto_poetry'))
+ \ && ale#python#PoetryPresent(a:buffer)
+ return 'poetry'
+ endif
+
+ if (ale#Var(a:buffer, 'python_auto_uv') || ale#Var(a:buffer, 'python_pylsp_auto_uv'))
+ \ && ale#python#UvPresent(a:buffer)
+ return 'uv'
+ endif
+
+ return ale#python#FindExecutable(a:buffer, 'python_pylsp', ['pylsp'])
+endfunction
+
+" Force the cwd of the server to be the same as the project root to
+" fix issues with treating local files matching first or third party library
+" names being imported incorrectly.
+function! ale_linters#python#pylsp#GetCwd(buffer) abort
+ let l:fake_linter = {
+ \ 'name': 'pylsp',
+ \ 'project_root': function('ale#python#FindProjectRoot'),
+ \}
+ let l:root = ale#lsp_linter#FindProjectRoot(a:buffer, l:fake_linter)
+
+ return !empty(l:root) ? l:root : v:null
+endfunction
+
+function! ale_linters#python#pylsp#GetCommand(buffer) abort
+ let l:executable = ale_linters#python#pylsp#GetExecutable(a:buffer)
+ let l:exec_args = l:executable =~? '\(pipenv\|poetry\|uv\)$'
+ \ ? ' run pylsp'
+ \ : ''
+ let l:env_string = ''
+
+ if ale#Var(a:buffer, 'python_auto_virtualenv')
+ let l:env_string = ale#python#AutoVirtualenvEnvString(a:buffer)
+ endif
+
+ return l:env_string . ale#Escape(l:executable) . l:exec_args . ale#Pad(ale#Var(a:buffer, 'python_pylsp_options'))
+endfunction
+
+call ale#linter#Define('python', {
+\ 'name': 'pylsp',
+\ 'lsp': 'stdio',
+\ 'executable': function('ale_linters#python#pylsp#GetExecutable'),
+\ 'cwd': function('ale_linters#python#pylsp#GetCwd'),
+\ 'command': function('ale_linters#python#pylsp#GetCommand'),
+\ 'project_root': function('ale#python#FindProjectRoot'),
+\ 'completion_filter': 'ale#completion#python#CompletionItemFilter',
+\ 'lsp_config': {b -> ale#Var(b, 'python_pylsp_config')},
+\})