diff --git a/.arcconfig b/.arcconfig
deleted file mode 100644
index 5a888cdf81bbceb59f7653d84ac05273cb37cf02..0000000000000000000000000000000000000000
--- a/.arcconfig
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "repository.callsign" : "CABAL",
-  "phabricator.uri"     : "https://phabricator.haskell.org"
-}
diff --git a/.ghci b/.ghci
deleted file mode 100644
index 1e251d3101621bfba8fa1c578b2d0f41aa0e52c2..0000000000000000000000000000000000000000
--- a/.ghci
+++ /dev/null
@@ -1,2 +0,0 @@
-:set -icabal-install -icabal-install/main
-:load Main
diff --git a/.ghcid b/.ghcid
deleted file mode 100644
index 510c5efdff423a793c2917ca283d87387e1dfde3..0000000000000000000000000000000000000000
--- a/.ghcid
+++ /dev/null
@@ -1 +0,0 @@
---command "ghci -j4 +RTS -A128m"
diff --git a/.gitignore b/.gitignore
index b5bea88e8709bd15c35982e5d6d8beabb23edfc1..4747b90b7af5af4a6845276618a3c3dd190c6ae3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,6 +26,11 @@ cabal-tests.log
 /cabal-install/Setup
 /cabal-install/source-file-list
 
+.stylish-haskell.yaml
+.stylish-haskell.yml
+.ghci
+.ghcid
+
 # Output of release and bootstrap
 _build
 
@@ -69,3 +74,6 @@ register.sh
 
 # benchmarks
 bench.html
+
+# Emacs
+.projectile
\ No newline at end of file
diff --git a/.mention-bot b/.mention-bot
deleted file mode 100644
index c936d2e509035e188bae506312f1619687832bcd..0000000000000000000000000000000000000000
--- a/.mention-bot
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "userBlacklist": [
-    "BardurArantsson"
-  , "SyntaxPolice"
-  ]
-}
diff --git a/.projectile b/.projectile
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/.stylish-haskell.yaml b/.stylish-haskell.yaml
deleted file mode 100644
index a45adc10418e68726a4b768512f37fa5f4868b4d..0000000000000000000000000000000000000000
--- a/.stylish-haskell.yaml
+++ /dev/null
@@ -1,19 +0,0 @@
-steps:
-  - imports:
-      align: group
-      list_align: after_alias
-      long_list_align: new_line
-      empty_list_align: right_after
-      list_padding: module_name
-  - language_pragmas:
-      style: vertical
-      remove_redundant: true
-  - trailing_whitespace: {}
-columns: 160
-language_extensions:
-  - DataKinds
-  - DerivingStrategies
-  - ExplicitForAll
-  - FlexibleContexts
-  - GeneralizedNewtypeDeriving
-  - MultiParamTypeClasses