addressing missing docs + cleaning up older Dhall files

autoload/ale/dhall.vim

@@ -1,4 +1,4 @@
-" Author: toastal <toastal@protonmail.com>
+" Author: Pat Brisbin <pbrisbin@gmail.com>, toastal <toastal@protonmail.com>
 " Description: Functions for working with Dhall’s executable
 
 call ale#Set('dhall_executable', 'dhall')
@@ -6,7 +6,10 @@ call ale#Set('dhall_use_global', get(g:, 'ale_use_global_executables', 0))
 call ale#Set('dhall_options', '')
 
 function! ale#dhall#GetExecutable(buffer) abort
-    return ale#Escape(ale#Var(a:buffer, 'dhall_executable'))
+    let l:executable = ale#Var(a:buffer, 'dhall_executable')
+
+    " Dhall is written in Haskell and commonly installed with Stack
+    return ale#handlers#haskell_stack#EscapeExecutable(l:executable, 'dhall')
 endfunction
 
 function! ale#dhall#GetExecutableWithOptions(buffer) abort

autoload/ale/fix/registry.vim

@@ -390,11 +390,6 @@ let s:default_registry = {
 \       'suggested_filetypes': ['html', 'htmldjango'],
 \       'description': 'Fix HTML files with html-beautify.',
 \   },
-\   'dhall': {
-\       'function': 'ale#fixers#dhall#Fix',
-\       'suggested_filetypes': ['dhall'],
-\       'description': 'Fix Dhall files with dhall-format.',
-\   },
 \}
 
 " Reset the function registry to the default entries.

autoload/ale/fixers/dhall.vim

@@ -1,23 +0,0 @@
-" Author: Pat Brisbin <pbrisbin@gmail.com>
-" Description: Integration of dhall-format with ALE.
-
-call ale#Set('dhall_format_executable', 'dhall')
-
-function! ale#fixers#dhall#GetExecutable(buffer) abort
-    let l:executable = ale#Var(a:buffer, 'dhall_format_executable')
-
-    " Dhall is written in Haskell and commonly installed with Stack
-    return ale#handlers#haskell_stack#EscapeExecutable(l:executable, 'dhall')
-endfunction
-
-function! ale#fixers#dhall#Fix(buffer) abort
-    let l:executable = ale#fixers#dhall#GetExecutable(a:buffer)
-
-    return {
-    \   'command': l:executable
-    \       . ' format'
-    \       . ' --inplace'
-    \       . ' %t',
-    \   'read_temporary_file': 1,
-    \}
-endfunction

autoload/ale/fixers/dhall_format.vim

@@ -1,6 +1,6 @@
 " Author: toastal <toastal@protonmail.com>
 " Description: Dhall’s built-in formatter
-
+"
 function! ale#fixers#dhall_format#Fix(buffer) abort
     let l:executable = ale#dhall#GetExecutableWithOptions(a:buffer)
     let l:command = l:executable