Python support poetry (#3834)

* Add poetry support to python linters and black fixer.

* Update python.vim to detect poetry project.

* Update ale.vim, add an option for poetry `g:ale_python_auto_poetry`.

* Update ale-python.txt, add poetry support.

* Add and update poetry related tests.

Co-authored-by: unc0 <unc0@users.noreply.github.com>

32 files changed, 414 insertions, 16 deletions

diff --git a/ale_linters/python/bandit.vim b/ale_linters/python/bandit.vim
index 554f5000..9cfca7c0 100644
--- a/ale_linters/python/bandit.vim
+++ b/ale_linters/python/bandit.vim
@@ -6,6 +6,7 @@ call ale#Set('python_bandit_options', '')
 call ale#Set('python_bandit_use_config', 1)
 call ale#Set('python_bandit_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('python_bandit_auto_pipenv', 0)
+call ale#Set('python_bandit_auto_poetry', 0)
 
 function! ale_linters#python#bandit#GetExecutable(buffer) abort
     if (
@@ -15,6 +16,13 @@ function! ale_linters#python#bandit#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (
+    \   ale#Var(a:buffer, 'python_auto_poetry')
+    \   || ale#Var(a:buffer, 'python_bandit_auto_poetry')
+    \) && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     return ale#python#FindExecutable(a:buffer, 'python_bandit', ['bandit'])
 endfunction
 
@@ -31,7 +39,7 @@ function! ale_linters#python#bandit#GetCommand(buffer) abort
         endif
     endif
 
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run bandit'
     \   : ''
 
diff --git a/ale_linters/python/flake8.vim b/ale_linters/python/flake8.vim
index 1d49d03f..9950614a 100644
--- a/ale_linters/python/flake8.vim
+++ b/ale_linters/python/flake8.vim
@@ -6,6 +6,7 @@ call ale#Set('python_flake8_options', '')
 call ale#Set('python_flake8_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('python_flake8_change_directory', 'project')
 call ale#Set('python_flake8_auto_pipenv', 0)
+call ale#Set('python_flake8_auto_poetry', 0)
 
 function! s:UsingModule(buffer) abort
     return ale#Var(a:buffer, 'python_flake8_options') =~# ' *-m flake8'
@@ -17,6 +18,11 @@ function! ale_linters#python#flake8#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_flake8_auto_poetry'))
+    \ && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     if !s:UsingModule(a:buffer)
         return ale#python#FindExecutable(a:buffer, 'python_flake8', ['flake8'])
     endif
@@ -62,7 +68,7 @@ endfunction
 function! ale_linters#python#flake8#GetCommand(buffer, version) abort
     let l:executable = ale_linters#python#flake8#GetExecutable(a:buffer)
 
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run flake8'
     \   : ''
 
diff --git a/ale_linters/python/mypy.vim b/ale_linters/python/mypy.vim
index 48697421..9d469a1a 100644
--- a/ale_linters/python/mypy.vim
+++ b/ale_linters/python/mypy.vim
@@ -7,6 +7,7 @@ call ale#Set('python_mypy_show_notes', 1)
 call ale#Set('python_mypy_options', '')
 call ale#Set('python_mypy_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('python_mypy_auto_pipenv', 0)
+call ale#Set('python_mypy_auto_poetry', 0)
 
 function! ale_linters#python#mypy#GetExecutable(buffer) abort
     if (ale#Var(a:buffer, 'python_auto_pipenv') || ale#Var(a:buffer, 'python_mypy_auto_pipenv'))
@@ -14,6 +15,11 @@ function! ale_linters#python#mypy#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_mypy_auto_poetry'))
+    \ && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     return ale#python#FindExecutable(a:buffer, 'python_mypy', ['mypy'])
 endfunction
 
@@ -37,7 +43,7 @@ endfunction
 
 function! ale_linters#python#mypy#GetCommand(buffer) abort
     let l:executable = ale_linters#python#mypy#GetExecutable(a:buffer)
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run mypy'
     \   : ''
 
diff --git a/ale_linters/python/prospector.vim b/ale_linters/python/prospector.vim
index ee47012f..3623bda0 100644
--- a/ale_linters/python/prospector.vim
+++ b/ale_linters/python/prospector.vim
@@ -2,6 +2,7 @@
 " Description: prospector linter python files
 
 call ale#Set('python_prospector_auto_pipenv', 0)
+call ale#Set('python_prospector_auto_poetry', 0)
 
 let g:ale_python_prospector_executable =
 \   get(g:, 'ale_python_prospector_executable', 'prospector')
@@ -17,13 +18,18 @@ function! ale_linters#python#prospector#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_prospector_auto_poetry'))
+    \ && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     return ale#python#FindExecutable(a:buffer, 'python_prospector', ['prospector'])
 endfunction
 
 function! ale_linters#python#prospector#GetCommand(buffer) abort
     let l:executable = ale_linters#python#prospector#GetExecutable(a:buffer)
 
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run prospector'
     \   : ''
 
diff --git a/ale_linters/python/pycodestyle.vim b/ale_linters/python/pycodestyle.vim
index fb521bc1..3fb94d69 100644
--- a/ale_linters/python/pycodestyle.vim
+++ b/ale_linters/python/pycodestyle.vim
@@ -5,6 +5,7 @@ call ale#Set('python_pycodestyle_executable', 'pycodestyle')
 call ale#Set('python_pycodestyle_options', '')
 call ale#Set('python_pycodestyle_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('python_pycodestyle_auto_pipenv', 0)
+call ale#Set('python_pycodestyle_auto_poetry', 0)
 
 function! ale_linters#python#pycodestyle#GetExecutable(buffer) abort
     if (ale#Var(a:buffer, 'python_auto_pipenv') || ale#Var(a:buffer, 'python_pycodestyle_auto_pipenv'))
@@ -12,13 +13,18 @@ function! ale_linters#python#pycodestyle#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_pycodestyle_auto_poetry'))
+    \ && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     return ale#python#FindExecutable(a:buffer, 'python_pycodestyle', ['pycodestyle'])
 endfunction
 
 function! ale_linters#python#pycodestyle#GetCommand(buffer) abort
     let l:executable = ale_linters#python#pycodestyle#GetExecutable(a:buffer)
 
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run pycodestyle'
     \   : ''
 
diff --git a/ale_linters/python/pydocstyle.vim b/ale_linters/python/pydocstyle.vim
index abf95fa1..aa0e8b20 100644
--- a/ale_linters/python/pydocstyle.vim
+++ b/ale_linters/python/pydocstyle.vim
@@ -5,6 +5,7 @@ call ale#Set('python_pydocstyle_executable', 'pydocstyle')
 call ale#Set('python_pydocstyle_options', '')
 call ale#Set('python_pydocstyle_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('python_pydocstyle_auto_pipenv', 0)
+call ale#Set('python_pydocstyle_auto_poetry', 0)
 
 function! ale_linters#python#pydocstyle#GetExecutable(buffer) abort
     if (ale#Var(a:buffer, 'python_auto_pipenv') || ale#Var(a:buffer, 'python_pydocstyle_auto_pipenv'))
@@ -12,12 +13,17 @@ function! ale_linters#python#pydocstyle#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_pydocstyle_auto_poetry'))
+    \ && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     return ale#python#FindExecutable(a:buffer, 'python_pydocstyle', ['pydocstyle'])
 endfunction
 
 function! ale_linters#python#pydocstyle#GetCommand(buffer) abort
     let l:executable = ale_linters#python#pydocstyle#GetExecutable(a:buffer)
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run pydocstyle'
     \   : ''
 
diff --git a/ale_linters/python/pyflakes.vim b/ale_linters/python/pyflakes.vim
index b5127022..2567c533 100644
--- a/ale_linters/python/pyflakes.vim
+++ b/ale_linters/python/pyflakes.vim
@@ -4,6 +4,7 @@
 call ale#Set('python_pyflakes_executable', 'pyflakes')
 call ale#Set('python_pyflakes_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('python_pyflakes_auto_pipenv', 0)
+call ale#Set('python_pyflakes_auto_poetry', 0)
 
 function! ale_linters#python#pyflakes#GetExecutable(buffer) abort
     if (ale#Var(a:buffer, 'python_auto_pipenv') || ale#Var(a:buffer, 'python_pyflakes_auto_pipenv'))
@@ -11,13 +12,18 @@ function! ale_linters#python#pyflakes#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_pyflakes_auto_poetry'))
+    \ && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     return ale#python#FindExecutable(a:buffer, 'python_pyflakes', ['pyflakes'])
 endfunction
 
 function! ale_linters#python#pyflakes#GetCommand(buffer) abort
     let l:executable = ale_linters#python#pyflakes#GetExecutable(a:buffer)
 
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run pyflakes'
     \   : ''
 
diff --git a/ale_linters/python/pylama.vim b/ale_linters/python/pylama.vim
index bad69667..73b59b07 100644
--- a/ale_linters/python/pylama.vim
+++ b/ale_linters/python/pylama.vim
@@ -5,6 +5,7 @@ call ale#Set('python_pylama_executable', 'pylama')
 call ale#Set('python_pylama_options', '')
 call ale#Set('python_pylama_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('python_pylama_auto_pipenv', 0)
+call ale#Set('python_pylama_auto_poetry', 0)
 call ale#Set('python_pylama_change_directory', 1)
 
 function! ale_linters#python#pylama#GetExecutable(buffer) abort
@@ -13,6 +14,11 @@ function! ale_linters#python#pylama#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_pylama_auto_poetry'))
+    \ && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     return ale#python#FindExecutable(a:buffer, 'python_pylama', ['pylama'])
 endfunction
 
@@ -31,7 +37,7 @@ endfunction
 
 function! ale_linters#python#pylama#GetCommand(buffer) abort
     let l:executable = ale_linters#python#pylama#GetExecutable(a:buffer)
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run pylama'
     \   : ''
 
diff --git a/ale_linters/python/pylint.vim b/ale_linters/python/pylint.vim
index f086a865..2ce5376f 100644
--- a/ale_linters/python/pylint.vim
+++ b/ale_linters/python/pylint.vim
@@ -6,6 +6,7 @@ call ale#Set('python_pylint_options', '')
 call ale#Set('python_pylint_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('python_pylint_change_directory', 1)
 call ale#Set('python_pylint_auto_pipenv', 0)
+call ale#Set('python_pylint_auto_poetry', 0)
 call ale#Set('python_pylint_use_msg_id', 0)
 
 function! ale_linters#python#pylint#GetExecutable(buffer) abort
@@ -14,6 +15,11 @@ function! ale_linters#python#pylint#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_pylint_auto_poetry'))
+    \ && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     return ale#python#FindExecutable(a:buffer, 'python_pylint', ['pylint'])
 endfunction
 
@@ -32,7 +38,7 @@ endfunction
 
 function! ale_linters#python#pylint#GetCommand(buffer, version) abort
     let l:executable = ale_linters#python#pylint#GetExecutable(a:buffer)
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run pylint'
     \   : ''
 
diff --git a/ale_linters/python/pylsp.vim b/ale_linters/python/pylsp.vim
index 4c6ac16d..537d1e74 100644
--- a/ale_linters/python/pylsp.vim
+++ b/ale_linters/python/pylsp.vim
@@ -5,6 +5,7 @@ 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_config', {})
 
 function! ale_linters#python#pylsp#GetExecutable(buffer) abort
@@ -13,13 +14,18 @@ function! ale_linters#python#pylsp#GetExecutable(buffer) abort
         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
+
     return ale#python#FindExecutable(a:buffer, 'python_pylsp', ['pylsp'])
 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$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run pylsp'
     \   : ''
 
diff --git a/ale_linters/python/pyre.vim b/ale_linters/python/pyre.vim
index 4edd80f7..d9b46763 100644
--- a/ale_linters/python/pyre.vim
+++ b/ale_linters/python/pyre.vim
@@ -4,6 +4,7 @@
 call ale#Set('python_pyre_executable', 'pyre')
 call ale#Set('python_pyre_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('python_pyre_auto_pipenv', 0)
+call ale#Set('python_pyre_auto_poetry', 0)
 
 function! ale_linters#python#pyre#GetExecutable(buffer) abort
     if (ale#Var(a:buffer, 'python_auto_pipenv') || ale#Var(a:buffer, 'python_pyre_auto_pipenv'))
@@ -11,13 +12,18 @@ function! ale_linters#python#pyre#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_pyre_auto_poetry'))
+    \ && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     return ale#python#FindExecutable(a:buffer, 'python_pyre', ['pyre'])
 endfunction
 
 function! ale_linters#python#pyre#GetCommand(buffer) abort
     let l:executable = ale_linters#python#pyre#GetExecutable(a:buffer)
 
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run pyre persistent'
     \   : ' persistent'
 
diff --git a/ale_linters/python/vulture.vim b/ale_linters/python/vulture.vim
index 84ffd49a..a7ba1860 100644
--- a/ale_linters/python/vulture.vim
+++ b/ale_linters/python/vulture.vim
@@ -29,7 +29,7 @@ endfunction
 
 function! ale_linters#python#vulture#GetCommand(buffer) abort
     let l:executable = ale_linters#python#vulture#GetExecutable(a:buffer)
-    let l:exec_args = l:executable =~? 'pipenv$'
+    let l:exec_args = l:executable =~? 'pipenv\|poetry$'
     \   ? ' run vulture'
     \   : ''
     let l:lint_dest = ale#Var(a:buffer, 'python_vulture_change_directory')
diff --git a/autoload/ale/fixers/black.vim b/autoload/ale/fixers/black.vim
index 142cd983..4a88c5cd 100644
--- a/autoload/ale/fixers/black.vim
+++ b/autoload/ale/fixers/black.vim
@@ -5,6 +5,7 @@ call ale#Set('python_black_executable', 'black')
 call ale#Set('python_black_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('python_black_options', '')
 call ale#Set('python_black_auto_pipenv', 0)
+call ale#Set('python_black_auto_poetry', 0)
 call ale#Set('python_black_change_directory', 1)
 
 function! ale#fixers#black#GetExecutable(buffer) abort
@@ -13,6 +14,11 @@ function! ale#fixers#black#GetExecutable(buffer) abort
         return 'pipenv'
     endif
 
+    if (ale#Var(a:buffer, 'python_auto_poetry') || ale#Var(a:buffer, 'python_black_auto_poetry'))
+    \ && ale#python#PoetryPresent(a:buffer)
+        return 'poetry'
+    endif
+
     return ale#python#FindExecutable(a:buffer, 'python_black', ['black'])
 endfunction
 
@@ -20,7 +26,7 @@ function! ale#fixers#black#Fix(buffer) abort
     let l:executable = ale#fixers#black#GetExecutable(a:buffer)
     let l:cmd = [ale#Escape(l:executable)]
 
-    if l:executable =~? 'pipenv$'
+    if l:executable =~? 'pipenv\|poetry$'
         call extend(l:cmd, ['run', 'black'])
     endif
 
diff --git a/autoload/ale/python.vim b/autoload/ale/python.vim
index 40433d17..ee856a27 100644
--- a/autoload/ale/python.vim
+++ b/autoload/ale/python.vim
@@ -2,6 +2,7 @@
 " Description: Functions for integrating with Python linters.
 
 call ale#Set('python_auto_pipenv', '0')
+call ale#Set('python_auto_poetry', '0')
 
 let s:sep = has('win32') ? '\' : '/'
 " bin is used for Unix virtualenv directories, and Scripts is for Windows.
@@ -158,3 +159,8 @@ endfunction
 function! ale#python#PipenvPresent(buffer) abort
     return findfile('Pipfile.lock', expand('#' . a:buffer . ':p:h') . ';') isnot# ''
 endfunction
+
+" Detects whether a poetry environment is present.
+function! ale#python#PoetryPresent(buffer) abort
+    return findfile('poetry.lock', expand('#' . a:buffer . ':p:h') . ';') isnot# ''
+endfunction
diff --git a/doc/ale-python.txt b/doc/ale-python.txt
index 7d390d54..7f746147 100644
--- a/doc/ale-python.txt
+++ b/doc/ale-python.txt
@@ -10,6 +10,14 @@ g:ale_python_auto_pipenv                             *g:ale_python_auto_pipenv*
   Detect whether the file is inside a pipenv, and set the executable to `pipenv`
   if true. This is overridden by a manually-set executable.
 
+g:ale_python_auto_poetry                             *g:ale_python_auto_poetry*
+                                                     *b:ale_python_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
 ===============================================================================
 ALE Python Project Root Behavior                              *ale-python-root*
 
@@ -136,6 +144,7 @@ g:ale_python_bandit_executable                 *g:ale_python_bandit_executable*
   See |ale-integrations-local-executables|
 
   Set this to `'pipenv'` to invoke `'pipenv` `run` `bandit'`.
+  Set this to `'poetry'` to invoke `'poetry` `run` `bandit'`.
 
 
 g:ale_python_bandit_options                       *g:ale_python_bandit_options*
@@ -175,6 +184,15 @@ g:ale_python_bandit_auto_pipenv               *g:ale_python_bandit_auto_pipenv*
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_bandit_auto_poetry               *g:ale_python_bandit_auto_poetry*
+                                              *b:ale_python_bandit_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 ===============================================================================
 black                                                        *ale-python-black*
 
@@ -210,6 +228,14 @@ g:ale_python_black_auto_pipenv                 *g:ale_python_black_auto_pipenv*
   Detect whether the file is inside a pipenv, and set the executable to `pipenv`
   if true. This is overridden by a manually-set executable.
 
+g:ale_python_black_auto_poetry                 *g:ale_python_black_auto_poetry*
+                                               *b:ale_python_black_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
 g:ale_python_black_change_directory       *g:ale_python_black_change_directory*
                                           *b:ale_python_black_change_directory*
   Type: |Number|
@@ -242,7 +268,8 @@ g:ale_python_flake8_executable                 *g:ale_python_flake8_executable*
   Default: `'flake8'`
 
   This variable can be changed to modify the executable used for flake8. Set
-  this to `'pipenv'` to invoke `'pipenv` `run` `flake8'`.
+  this to `'pipenv'` to invoke `'pipenv` `run` `flake8'`. Set this to
+  `'poetry'` to invoke `'poetry` `run` `flake8'`.
 
 
 g:ale_python_flake8_options                       *g:ale_python_flake8_options*
@@ -284,6 +311,15 @@ g:ale_python_flake8_auto_pipenv               *g:ale_python_flake8_auto_pipenv*
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_flake8_auto_poetry               *g:ale_python_flake8_auto_poetry*
+                                              *b:ale_python_flake8_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 ===============================================================================
 isort                                                        *ale-python-isort*
 
@@ -339,6 +375,15 @@ g:ale_python_mypy_auto_pipenv                   *g:ale_python_mypy_auto_pipenv*
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_mypy_auto_poetry                   *g:ale_python_mypy_auto_poetry*
+                                                *b:ale_python_mypy_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 g:ale_python_mypy_executable                     *g:ale_python_mypy_executable*
                                                  *b:ale_python_mypy_executable*
   Type: |String|
@@ -347,6 +392,7 @@ g:ale_python_mypy_executable                     *g:ale_python_mypy_executable*
   See |ale-integrations-local-executables|
 
   Set this to `'pipenv'` to invoke `'pipenv` `run` `mypy'`.
+  Set this to `'poetry'` to invoke `'poetry` `run` `mypy'`.
 
 
 g:ale_python_mypy_ignore_invalid_syntax
@@ -397,6 +443,7 @@ g:ale_python_prospector_executable         *g:ale_python_prospector_executable*
   See |ale-integrations-local-executables|
 
   Set this to `'pipenv'` to invoke `'pipenv` `run` `prospector'`.
+  Set this to `'poetry'` to invoke `'poetry` `run` `prospector'`.
 
 
 g:ale_python_prospector_options               *g:ale_python_prospector_options*
@@ -437,6 +484,15 @@ g:ale_python_prospector_auto_pipenv       *g:ale_python_prospector_auto_pipenv*
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_prospector_auto_poetry       *g:ale_python_prospector_auto_poetry*
+                                          *b:ale_python_prospector_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 ===============================================================================
 pycodestyle                                            *ale-python-pycodestyle*
 
@@ -449,6 +505,7 @@ g:ale_python_pycodestyle_executable       *g:ale_python_pycodestyle_executable*
   See |ale-integrations-local-executables|
 
   Set this to `'pipenv'` to invoke `'pipenv` `run` `pycodestyle'`.
+  Set this to `'poetry'` to invoke `'poetry` `run` `pycodestyle'`.
 
 
 g:ale_python_pycodestyle_options             *g:ale_python_pycodestyle_options*
@@ -477,6 +534,15 @@ g:ale_python_pycodestyle_auto_pipenv     *g:ale_python_pycodestyle_auto_pipenv*
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_pycodestyle_auto_poetry     *g:ale_python_pycodestyle_auto_poetry*
+                                         *b:ale_python_pycodestyle_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 ===============================================================================
 pydocstyle                                              *ale-python-pydocstyle*
 
@@ -489,6 +555,7 @@ g:ale_python_pydocstyle_executable         *g:ale_python_pydocstyle_executable*
   See |ale-integrations-local-executables|
 
   Set this to `'pipenv'` to invoke `'pipenv` `run` `pydocstyle'`.
+  Set this to `'poetry'` to invoke `'poetry` `run` `pydocstyle'`.
 
 
 g:ale_python_pydocstyle_options               *g:ale_python_pydocstyle_options*
@@ -517,6 +584,15 @@ g:ale_python_pydocstyle_auto_pipenv       *g:ale_python_pydocstyle_auto_pipenv*
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_pydocstyle_auto_poetry       *g:ale_python_pydocstyle_auto_poetry*
+                                          *b:ale_python_pydocstyle_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 ===============================================================================
 pyflakes                                                  *ale-python-pyflakes*
 
@@ -529,6 +605,7 @@ g:ale_python_pyflakes_executable             *g:ale_python_pyflakes_executable*
   See |ale-integrations-local-executables|
 
   Set this to `'pipenv'` to invoke `'pipenv` `run` `pyflakes'`.
+  Set this to `'poetry'` to invoke `'poetry` `run` `pyflakes'`.
 
 
 g:ale_python_pyflakes_auto_pipenv           *g:ale_python_pyflakes_auto_pipenv*
@@ -540,6 +617,15 @@ g:ale_python_pyflakes_auto_pipenv           *g:ale_python_pyflakes_auto_pipenv*
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_pyflakes_auto_poetry           *g:ale_python_pyflakes_auto_poetry*
+                                            *b:ale_python_pyflakes_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 ===============================================================================
 pylama                                                      *ale-python-pylama*
 
@@ -561,7 +647,8 @@ g:ale_python_pylama_executable                 *g:ale_python_pylama_executable*
   Default: `'pylama'`
 
   This variable can be changed to modify the executable used for pylama. Set
-  this to `'pipenv'` to invoke `'pipenv` `run` `pylama'`.
+  this to `'pipenv'` to invoke `'pipenv` `run` `pylama'`. Set this to
+  `'poetry'` to invoke `'poetry` `run` `pylama'`.
 
 
 g:ale_python_pylama_options                       *g:ale_python_pylama_options*
@@ -594,6 +681,15 @@ g:ale_python_pylama_auto_pipenv               *g:ale_python_pylama_auto_pipenv*
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_pylama_auto_poetry               *g:ale_python_pylama_auto_poetry*
+                                              *b:ale_python_pylama_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 ===============================================================================
 pylint                                                      *ale-python-pylint*
 
@@ -618,6 +714,7 @@ g:ale_python_pylint_executable                 *g:ale_python_pylint_executable*
   See |ale-integrations-local-executables|
 
   Set this to `'pipenv'` to invoke `'pipenv` `run` `pylint'`.
+  Set this to `'poetry'` to invoke `'poetry` `run` `pylint'`.
 
 
 g:ale_python_pylint_options                       *g:ale_python_pylint_options*
@@ -657,6 +754,15 @@ g:ale_python_pylint_auto_pipenv               *g:ale_python_pylint_auto_pipenv*
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_pylint_auto_poetry               *g:ale_python_pylint_auto_poetry*
+                                              *b:ale_python_pylint_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 g:ale_python_pylint_use_msg_id                 *g:ale_python_pylint_use_msg_id*
                                                *b:ale_python_pylint_use_msg_id*
   Type: |Number|
@@ -680,6 +786,7 @@ g:ale_python_pylsp_executable                     *g:ale_python_pylsp_executable
   See |ale-integrations-local-executables|
 
   Set this to `'pipenv'` to invoke `'pipenv` `run` `pylsp'`.
+  Set this to `'poetry'` to invoke `'poetry` `run` `pyls'`.
 
 
 g:ale_python_pylsp_use_global                     *g:ale_python_pylsp_use_global*
@@ -699,6 +806,15 @@ g:ale_python_pylsp_auto_pipenv                   *g:ale_python_pylsp_auto_pipenv
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_pylsp_auto_poetry                   *g:ale_python_pylsp_auto_poetry*
+                                                *b:ale_python_pylsp_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 g:ale_python_pylsp_config                             *g:ale_python_pylsp_config*
                                                      *b:ale_python_pylsp_config*
   Type: |Dictionary|
@@ -750,6 +866,7 @@ g:ale_python_pyre_executable                     *g:ale_python_pyre_executable*
   See |ale-integrations-local-executables|
 
   Set this to `'pipenv'` to invoke `'pipenv` `run` `pyre'`.
+  Set this to `'poetry'` to invoke `'poetry` `run` `pyre'`.
 
 
 g:ale_python_pyre_use_global                     *g:ale_python_pyre_use_global*
@@ -769,6 +886,15 @@ g:ale_python_pyre_auto_pipenv                   *g:ale_python_pyre_auto_pipenv*
   if true. This is overridden by a manually-set executable.
 
 
+g:ale_python_pyre_auto_poetry                   *g:ale_python_pyre_auto_poetry*
+                                                *b:ale_python_pyre_auto_poetry*
+  Type: |Number|
+  Default: `0`
+
+  Detect whether the file is inside a poetry, and set the executable to `poetry`
+  if true. This is overridden by a manually-set executable.
+
+
 ===============================================================================
 pyright                                                    *ale-python-pyright*
 
diff --git a/plugin/ale.vim b/plugin/ale.vim
index 7c79f261..0268bc99 100644
--- a/plugin/ale.vim
+++ b/plugin/ale.vim
@@ -172,6 +172,9 @@ let g:ale_completion_enabled = get(g:, 'ale_completion_enabled', 0)
 " Enable automatic detection of pipenv for Python linters.
 let g:ale_python_auto_pipenv = get(g:, 'ale_python_auto_pipenv', 0)
 
+" Enable automatic detection of poetry for Python linters.
+let g:ale_python_auto_poetry = get(g:, 'ale_python_auto_poetry', 0)
+
 " This variable can be overridden to set the GO111MODULE environment variable.
 let g:ale_go_go111module = get(g:, 'ale_go_go111module', '')
 
diff --git a/test/fixers/test_black_fixer_callback.vader b/test/fixers/test_black_fixer_callback.vader
index a69eafd9..bb76a1fe 100644
--- a/test/fixers/test_black_fixer_callback.vader
+++ b/test/fixers/test_black_fixer_callback.vader
@@ -55,3 +55,13 @@ Execute(Pipenv is detected when python_black_auto_pipenv is set):
   AssertEqual
   \ {'command': ale#Escape('pipenv') . ' run black -'},
   \ ale#fixers#black#Fix(bufnr(''))
+
+Execute(Poetry is detected when python_black_auto_poetry is set):
+  let g:ale_python_black_auto_poetry = 1
+  let g:ale_python_black_change_directory = 0
+
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertEqual
+  \ {'command': ale#Escape('poetry') . ' run black -'},
+  \ ale#fixers#black#Fix(bufnr(''))
diff --git a/test/linter/test_bandit.vader b/test/linter/test_bandit.vader
index 3d3a60a3..e9488c00 100644
--- a/test/linter/test_bandit.vader
+++ b/test/linter/test_bandit.vader
@@ -48,6 +48,25 @@ Execute(Pipenv is detected when python_bandit_auto_pipenv is set):
   \ . b:bandit_flags
   \ . ' -'
 
+Execute(Setting executable to 'poetry' appends 'run bandit'):
+  let g:ale_python_bandit_executable = 'path/to/poetry'
+
+  AssertLinter 'path/to/poetry',
+  \ ale#Escape('path/to/poetry')
+  \ . ' run bandit'
+  \ . b:bandit_flags
+  \ . ' -'
+
+Execute(Poetry is detected when python_bandit_auto_poetry is set):
+  let g:ale_python_bandit_auto_poetry = 1
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertLinter 'poetry',
+  \ ale#Escape('poetry')
+  \ . ' run bandit'
+  \ . b:bandit_flags
+  \ . ' -'
+
 Execute(The bandit command callback should add .bandit by default):
   silent execute 'file ' . fnameescape(g:dir . '/../test-files/python/with_bandit/namespace/foo/bar.py')
 
diff --git a/test/linter/test_flake8.vader b/test/linter/test_flake8.vader
index 81efe497..0b87c27b 100644
--- a/test/linter/test_flake8.vader
+++ b/test/linter/test_flake8.vader
@@ -199,3 +199,19 @@ Execute(Pipenv is detected when python_flake8_auto_pipenv is set):
   AssertLinterCwd ale#python#FindProjectRootIni(bufnr(''))
   AssertLinter 'pipenv',
   \ ale#Escape('pipenv') . ' run flake8 --format=default --stdin-display-name %s -'
+
+Execute(Setting executable to 'poetry' should append 'run flake8'):
+  let g:ale_python_flake8_executable = 'path/to/poetry'
+
+  " FIXME: poetry should check the version with flake8.
+  GivenCommandOutput []
+  AssertLinter 'path/to/poetry',
+  \ ale#Escape('path/to/poetry') . ' run flake8 --format=default -'
+
+Execute(poetry is detected when python_flake8_auto_poetry is set):
+  let g:ale_python_flake8_auto_poetry = 1
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertLinterCwd ale#python#FindProjectRootIni(bufnr(''))
+  AssertLinter 'poetry',
+  \ ale#Escape('poetry') . ' run flake8 --format=default --stdin-display-name %s -'
diff --git a/test/linter/test_mypy.vader b/test/linter/test_mypy.vader
index 8c1e5e9c..bac59d92 100644
--- a/test/linter/test_mypy.vader
+++ b/test/linter/test_mypy.vader
@@ -88,3 +88,19 @@ Execute(Pipenv is detected when python_mypy_auto_pipenv is set):
   AssertLinterCwd expand('#' . bufnr('') . ':p:h')
   AssertLinter 'pipenv',
   \ ale#Escape('pipenv') . ' run mypy --show-column-numbers --shadow-file %s %t %s'
+
+Execute(Setting executable to 'poetry' appends 'run mypy'):
+  let g:ale_python_mypy_executable = 'path/to/poetry'
+
+  AssertLinterCwd expand('#' . bufnr('') . ':p:h')
+  AssertLinter 'path/to/poetry',
+  \ ale#Escape('path/to/poetry') . ' run mypy'
+  \   . ' --show-column-numbers --shadow-file %s %t %s'
+
+Execute(Poetry is detected when python_mypy_auto_poetry is set):
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+  let g:ale_python_mypy_auto_poetry = 1
+
+  AssertLinterCwd expand('#' . bufnr('') . ':p:h')
+  AssertLinter 'poetry',
+  \ ale#Escape('poetry') . ' run mypy --show-column-numbers --shadow-file %s %t %s'
diff --git a/test/linter/test_prospector.vader b/test/linter/test_prospector.vader
index d6f84308..82e1596d 100644
--- a/test/linter/test_prospector.vader
+++ b/test/linter/test_prospector.vader
@@ -18,3 +18,18 @@ Execute(Pipenv is detected when python_prospector_auto_pipenv is set):
   AssertLinter 'pipenv',
   \ ale#Escape('pipenv') . ' run prospector'
   \   .  '  --messages-only --absolute-paths --zero-exit --output-format json %s'
+
+Execute(Setting executable to 'poetry' appends 'run prospector'):
+  let g:ale_python_prospector_executable = 'path/to/poetry'
+
+  AssertLinter 'path/to/poetry',
+  \ ale#Escape('path/to/poetry') . ' run prospector'
+  \   .  '  --messages-only --absolute-paths --zero-exit --output-format json %s'
+
+Execute(Poetry is detected when python_prospector_auto_poetry is set):
+  let g:ale_python_prospector_auto_poetry = 1
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertLinter 'poetry',
+  \ ale#Escape('poetry') . ' run prospector'
+  \   .  '  --messages-only --absolute-paths --zero-exit --output-format json %s'
diff --git a/test/linter/test_pycodestyle.vader b/test/linter/test_pycodestyle.vader
index 9260913c..fac53d9f 100644
--- a/test/linter/test_pycodestyle.vader
+++ b/test/linter/test_pycodestyle.vader
@@ -31,3 +31,16 @@ Execute(Pipenv is detected when python_pycodestyle_auto_pipenv is set):
 
   AssertLinter 'pipenv',
   \ ale#Escape('pipenv') . ' run pycodestyle  -'
+
+Execute(Setting executable to 'poetry' appends 'run pycodestyle'):
+  let g:ale_python_pycodestyle_executable = 'path/to/poetry'
+
+  AssertLinter 'path/to/poetry',
+  \ ale#Escape('path/to/poetry') . ' run pycodestyle  -'
+
+Execute(Poetry is detected when python_pycodestyle_auto_poetry is set):
+  let g:ale_python_pycodestyle_auto_poetry = 1
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertLinter 'poetry',
+  \ ale#Escape('poetry') . ' run pycodestyle  -'
diff --git a/test/linter/test_pydocstyle.vader b/test/linter/test_pydocstyle.vader
index b24cb0d9..24d669c6 100644
--- a/test/linter/test_pydocstyle.vader
+++ b/test/linter/test_pydocstyle.vader
@@ -31,3 +31,15 @@ Execute(Pipenv is detected when python_pydocstyle_auto_pipenv is set):
   call ale#test#SetFilename('../test-files/python/pipenv/whatever.py')
 
   AssertLinter 'pipenv', ale#Escape('pipenv') . ' run pydocstyle %s:t'
+
+Execute(Setting executable to 'poetry' appends 'run pydocstyle'):
+  let g:ale_python_pydocstyle_executable = 'path/to/poetry'
+
+  AssertLinter 'path/to/poetry',
+  \ ale#Escape('path/to/poetry') . ' run pydocstyle %s:t'
+
+Execute(Poetry is detected when python_pydocstyle_auto_poetry is set):
+  let g:ale_python_pydocstyle_auto_poetry = 1
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertLinter 'poetry', ale#Escape('poetry') . ' run pydocstyle %s:t'
diff --git a/test/linter/test_pyflakes.vader b/test/linter/test_pyflakes.vader
index bbb7b74c..bd442098 100644
--- a/test/linter/test_pyflakes.vader
+++ b/test/linter/test_pyflakes.vader
@@ -44,3 +44,16 @@ Execute(Pipenv is detected when python_pyflakes_auto_pipenv is set):
 
   AssertLinter 'pipenv',
   \ ale#Escape('pipenv') . ' run pyflakes %t'
+
+Execute(Setting executable to 'poetry' appends 'run pyflakes'):
+  let g:ale_python_pyflakes_executable = 'path/to/poetry'
+
+  AssertLinter 'path/to/poetry',
+  \ ale#Escape('path/to/poetry') . ' run pyflakes %t',
+
+Execute(Poetry is detected when python_pyflakes_auto_poetry is set):
+  let g:ale_python_pyflakes_auto_poetry = 1
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertLinter 'poetry',
+  \ ale#Escape('poetry') . ' run pyflakes %t'
diff --git a/test/linter/test_pylama.vader b/test/linter/test_pylama.vader
index 29fa971b..3c6a6efa 100644
--- a/test/linter/test_pylama.vader
+++ b/test/linter/test_pylama.vader
@@ -74,3 +74,15 @@ Execute(Pipenv is detected when python_pylama_auto_pipenv is set):
   call ale#test#SetFilename('../test-files/python/pipenv/whatever.py')
 
   AssertLinter 'pipenv', ale#Escape('pipenv') . ' run pylama' . b:command_tail
+
+Execute(Setting executable to 'poetry' appends 'run pylama'):
+  let g:ale_python_pylama_executable = 'path/to/poetry'
+
+  AssertLinter 'path/to/poetry',
+  \ ale#Escape('path/to/poetry') . ' run pylama' . b:command_tail
+
+Execute(poetry is detected when python_pylama_auto_poetry is set):
+  let g:ale_python_pylama_auto_poetry = 1
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertLinter 'poetry', ale#Escape('poetry') . ' run pylama' . b:command_tail
diff --git a/test/linter/test_pylint.vader b/test/linter/test_pylint.vader
index e581915f..d15161e6 100644
--- a/test/linter/test_pylint.vader
+++ b/test/linter/test_pylint.vader
@@ -79,3 +79,18 @@ Execute(Pipenv is detected when python_pylint_auto_pipenv is set):
   AssertLinterCwd expand('%:p:h')
   AssertLinter 'pipenv', ale#Escape('pipenv') . ' run pylint'
   \   . ' --output-format text --msg-template="{path}:{line}:{column}: {msg_id} ({symbol}) {msg}" --reports n %s'
+
+Execute(Setting executable to 'poetry' appends 'run pylint'):
+  let g:ale_python_pylint_executable = 'path/to/poetry'
+  let g:ale_python_pylint_use_global = 1
+
+  AssertLinter 'path/to/poetry', ale#Escape('path/to/poetry') . ' run pylint'
+  \   . ' --output-format text --msg-template="{path}:{line}:{column}: {msg_id} ({symbol}) {msg}" --reports n %s'
+
+Execute(poetry is detected when python_pylint_auto_poetry is set):
+  let g:ale_python_pylint_auto_poetry = 1
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertLinterCwd expand('%:p:h')
+  AssertLinter 'poetry', ale#Escape('poetry') . ' run pylint'
+  \   . ' --output-format text --msg-template="{path}:{line}:{column}: {msg_id} ({symbol}) {msg}" --reports n %s'
diff --git a/test/linter/test_pylsp.vader b/test/linter/test_pylsp.vader
index 9d7d0775..acee2c3f 100644
--- a/test/linter/test_pylsp.vader
+++ b/test/linter/test_pylsp.vader
@@ -51,6 +51,18 @@ Execute(Pipenv is detected when python_pylsp_auto_pipenv is set):
   AssertLinter 'pipenv',
   \ ale#Escape('pipenv') . ' run pylsp'
 
+Execute(Setting executable to 'poetry' appends 'run pylsp'):
+  let g:ale_python_pylsp_executable = 'path/to/poetry'
+
+  AssertLinter 'path/to/poetry', ale#Escape('path/to/poetry') . ' run pylsp'
+
+Execute(poetry is detected when python_pylsp_auto_poetry is set):
+  let g:ale_python_pylsp_auto_poetry = 1
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertLinter 'poetry',
+  \ ale#Escape('poetry') . ' run pylsp'
+
 Execute(Should accept configuration settings):
   AssertLSPConfig {}
   let b:ale_python_pylsp_config = {'pylsp': {'plugins': {'preload': {'enabled': v:false}}}}
diff --git a/test/linter/test_pyre.vader b/test/linter/test_pyre.vader
index d3e5fe9d..335e31f2 100644
--- a/test/linter/test_pyre.vader
+++ b/test/linter/test_pyre.vader
@@ -44,3 +44,16 @@ Execute(Pipenv is detected when python_pyre_auto_pipenv is set):
 
   AssertLinter 'pipenv',
   \ ale#Escape('pipenv') . ' run pyre persistent'
+
+Execute(Setting executable to 'poetry' appends 'run pyre'):
+  let g:ale_python_pyre_executable = 'path/to/poetry'
+
+  AssertLinter 'path/to/poetry',
+  \ ale#Escape('path/to/poetry') . ' run pyre persistent'
+
+Execute(Poetry is detected when python_pyre_auto_poetry is set):
+  let g:ale_python_pyre_auto_poetry = 1
+  call ale#test#SetFilename('../test-files/python/poetry/whatever.py')
+
+  AssertLinter 'poetry',
+  \ ale#Escape('poetry') . ' run pyre persistent'
diff --git a/test/linter/test_vulture.vader b/test/linter/test_vulture.vader
index 74709c9e..78655bd7 100644
--- a/test/linter/test_vulture.vader
+++ b/test/linter/test_vulture.vader
@@ -56,3 +56,7 @@ Execute(Setting executable to 'pipenv' appends 'run vulture'):
   let g:ale_python_vulture_executable = 'path/to/pipenv'
 
   AssertLinter 'path/to/pipenv', ale#Escape('path/to/pipenv') . ' run vulture' . '  .'
+Execute(Setting executable to 'poetry' appends 'run vulture'):
+  let g:ale_python_vulture_executable = 'path/to/poetry'
+
+  AssertLinter 'path/to/poetry', ale#Escape('path/to/poetry') . ' run vulture' . '  .'
diff --git a/test/test-files/python/poetry/poetry.lock b/test/test-files/python/poetry/poetry.lock
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/test/test-files/python/poetry/poetry.lock
diff --git a/test/test_python_pipenv.vader b/test/test_python_pipenv.vader
index 8b1e9ab0..041e2874 100644
--- a/test/test_python_pipenv.vader
+++ b/test/test_python_pipenv.vader
@@ -11,7 +11,7 @@ Execute(ale#python#PipenvPresent is true when a pipenv environment is present):
   \  ale#python#PipenvPresent(bufnr('%')),
   \  1
 
-Execute(ale#python#PipenvPresent is false true when no pipenv environment is present):
+Execute(ale#python#PipenvPresent is false when no pipenv environment is present):
   call ale#test#SetFilename('test-files/python/no_pipenv/whatever.py')
 
   AssertEqual
diff --git a/test/test_python_poetry.vader b/test/test_python_poetry.vader
new file mode 100644
index 00000000..8197b786
--- /dev/null
+++ b/test/test_python_poetry.vader
@@ -0,0 +1,19 @@
+Before:
+  call ale#test#SetDirectory('/testplugin/test')
+
+After:
+  call ale#test#RestoreDirectory()
+
+Execute(ale#python#poetryPresent is true when a poetry environment is present):
+  call ale#test#SetFilename('test-files/python/poetry/whatever.py')
+
+  AssertEqual
+  \  ale#python#PoetryPresent(bufnr('%')),
+  \  1
+
+Execute(ale#python#poetryPresent is false when no poetry environment is present):
+  call ale#test#SetFilename('test-files/python/no_poetry/whatever.py')
+
+  AssertEqual
+  \  ale#python#PoetryPresent(bufnr('%')),
+  \  0