When set to true, and the buffer is currently inside a pipenv,
GetExecutable will return "pipenv", which will trigger the existing
functionality to append the correct pipenv arguments to run each linter.
Defaults to false.
I was going to implement ale#python#PipenvPresent by invoking
`pipenv --venv` or `pipenv --where`, but it seemed to be abominably
slow, even to the point where the test suite wasn't even finishing
("Tried to run tests 3 times"). The diff is:
diff --git a/autoload/ale/python.vim b/autoload/ale/python.vim
index 7baae079..8c100d41 100644
--- a/autoload/ale/python.vim
+++ b/autoload/ale/python.vim
@@ -106,5 +106,9 @@ endfunction
" Detects whether a pipenv environment is present.
function! ale#python#PipenvPresent(buffer) abort
- return findfile('Pipfile.lock', expand('#' . a:buffer . ':p:h') . ';') isnot# ''
+ let l:cd_string = ale#path#BufferCdString(a:buffer)
+ let l:output = systemlist(l:cd_string . 'pipenv --where')[0]
+ " `pipenv --where` returns the path to the dir containing the Pipfile
+ " if in a pipenv, or some error text otherwise.
+ return strpart(l:output, 0, 18) !=# "No Pipfile present"
endfunction
Using vim's `findfile` is much faster, behaves correctly in the majority
of situations, and also works reliably when the `pipenv` command doesn't
exist.
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