diff --git a/etc/dev/haskell/stylish-haskell/config.yaml b/etc/dev/haskell/stylish-haskell/config.yaml
index 59f65f8..40c230a 100644
--- a/etc/dev/haskell/stylish-haskell/config.yaml
+++ b/etc/dev/haskell/stylish-haskell/config.yaml
@@ -1,59 +1,126 @@
----
+# stylish-haskell configuration file
+# ==================================
+steps:
+  - records:
+      # How to format equals sign between type constructor and data constructor.
+      # Possible values:
+      # - "same_line" -- leave "=" AND data constructor on the same line as the type constructor.
+      # - "indent N" -- insert a new line and N spaces from the beginning of the next line.
+      equals: "same_line"
 
-newline: native
-cabal: true
-columns: 120
+      # How to format first field of each record constructor.
+      # Possible values:
+      # - "same_line" -- "{" and first field goes on the same line as the data constructor.
+      # - "indent N" -- insert a new line and N spaces from the beginning of the data constructor
+      first_field: "same_line"
 
-steps:
+      # How many spaces to insert between the column with "," and the beginning of the comment in the next line.
+      field_comment: 2
+
+      # How many spaces to insert before "deriving" clause. Deriving clauses are always on separate lines.
+      deriving: 8
+
+      # How many spaces to insert before "via" clause counted from indentation of deriving clause
+      # Possible values:
+      # - "same_line" -- "via" part goes on the same line as "deriving" keyword.
+      # - "indent N" -- insert a new line and N spaces from the beginning of "deriving" keyword.
+      via: "same_line"
+
+      # Sort typeclass names in the "deriving" list alphabetically.
+      sort_deriving: true
+
+      # Wheter or not to break enums onto several lines
+      #
+      # Default: false
+      break_enums: false
+
+      # Whether or not to break single constructor data types before `=` sign
+      #
+      # Default: true
+      break_single_constructors: true
+
+      # Whether or not to curry constraints on function.
+      #
+      # E.g: @allValues :: Enum a => Bounded a => Proxy a -> [a]@
+      #
+      # Instead of @allValues :: (Enum a, Bounded a) => Proxy a -> [a]@
+      #
+      # Default: false
+      curried_context: false
+
+  # Align the right hand side of some elements.  This is quite conservative
+  # and only applies to statements where each element occupies a single
+  # line.
+  # Possible values:
+  # - always - Always align statements.
+  # - adjacent - Align statements that are on adjacent lines in groups.
+  # - never - Never align statements.
+  # All default to always.
   - simple_align:
       cases: always
       top_level_patterns: always
       records: always
       multi_way_if: always
 
-  - trailing_whitespace: {}
-
   - imports:
-      align: global
-      list_align: with_alias
+      # There are different ways we can align names and lists.
+      align: group
+
+      # The following options affect only import list alignment.
+      list_align: after_alias
+
+      # Right-pad the module names to align imports in a group:
       pad_module_names: true
+
+      # Long list align style takes effect when import is too long. This is
+      # determined by 'columns' setting.
       long_list_align: inline
+
+      # Align empty list (importing instances)
       empty_list_align: inherit
-      list_padding: 4
+
+      # List padding determines indentation of import list on lines after import.
+      # This option affects 'long_list_align'.
+      list_padding: "module_name"
+
+      # Separate lists option affects formatting of import list for type
+      # or class. The only difference is single space between type and list
+      # of constructors, selectors and class functions.
       separate_lists: true
+
+      # Space surround option affects formatting of import lists on a single
+      # line. The only difference is single space after the initial
+      # parenthesis and a single space before the terminal parenthesis.
       space_surround: false
-      post_qualify: true
+
+      # Enabling this argument will use the new GHC lib parse to format imports.
+      ghc_lib_parser: true
 
   - language_pragmas:
+      # We can generate different styles of language pragma lists.
       style: vertical
+
+      # Align affects alignment of closing pragma brackets.
       align: true
+
       remove_redundant: true
       language_prefix: LANGUAGE
 
-  - module_header:
-      indent: 4
-      sort: true
-      separate_lists: true
-      break_where: inline
-      open_bracket: next_line
-
-  - records:
-      equals: same_line
-      first_field: same_line
-      field_comment: 2
-      deriving: 8
-      via: same_line
-      sort_deriving: true
-      break_enums: false
-      break_single_constructors: true
-      curried_context: false
-
+  # Replace tabs by spaces.
+  # Number of spaces to use for each tab. Default: 8, as specified by the
+  # Haskell report.
   - tabs:
       spaces: 8
 
+  # Remove trailing whitespace
+  - trailing_whitespace: {}
+
+columns: 120
+
+newline: native
+
 language_extensions:
   - BangPatterns
-  - ImportQualifiedPost
   - ConstraintKinds
   - DataKinds
   - DefaultSignatures
@@ -74,7 +141,6 @@ language_extensions:
   - MultiParamTypeClasses
   - MultiWayIf
   - NamedFieldPuns
-  - NoImplicitPrelude
   - OverloadedStrings
   - QuasiQuotes
   - RecordWildCards
@@ -85,3 +151,9 @@ language_extensions:
   - TypeApplications
   - TypeFamilies
   - ViewPatterns
+
+# Attempt to find the cabal file in ancestors of the current directory, and
+# parse options (currently only language extensions) from that.
+#
+# Default: true
+cabal: true
diff --git a/etc/dev/lua/luaformatter/config.yaml b/etc/dev/lua/luaformatter/config.yaml
new file mode 100644
index 0000000..d9303f1
--- /dev/null
+++ b/etc/dev/lua/luaformatter/config.yaml
@@ -0,0 +1,42 @@
+use_tab: true
+indent_width: 1
+continuation_indent_width: 4
+tab_width: 8
+
+align_args: true
+align_parameter: true
+align_table_field: true
+
+break_after_functioncall_lp: false
+break_after_functiondef_lp: false
+break_after_operator: true
+break_after_table_lb: true
+break_before_functioncall_rp: false
+break_before_functiondef_rp: false
+break_before_table_rb: true
+
+chop_down_kv_table: true
+chop_down_parameter: false
+chop_down_table: true
+
+column_limit: 100
+column_table_limit: 0
+
+double_quote_to_single_quote: true
+extra_sep_at_table_end: false
+
+keep_simple_control_block_one_line: true
+keep_simple_function_one_line: true
+
+line_breaks_after_function_body: 1
+line_separator: input
+
+single_quote_to_double_quote: false
+
+spaces_around_equals_in_field: true
+spaces_before_call: 1
+spaces_inside_functioncall_parens: false
+spaces_inside_functiondef_parens: false
+spaces_inside_table_braces: true
+
+table_sep: ","