treewide. complete refactor

Lots of cleaning up, I cannot be arsed to commit everything one-by-one

pkgs/alejandra-custom/0001-no-ads.patch

@@ -0,0 +1,44 @@
+diff --git a/src/alejandra_cli/src/cli.rs b/src/alejandra_cli/src/cli.rs
+index bab102c..b90bf1d 100644
+--- a/src/alejandra_cli/src/cli.rs
++++ b/src/alejandra_cli/src/cli.rs
+@@ -7,7 +7,6 @@ use futures::future::RemoteHandle;
+ use futures::stream::FuturesUnordered;
+ use futures::task::SpawnExt;
+
+-use crate::ads::random_ad;
+ use crate::verbosity::Verbosity;
+
+ /// The Uncompromising Nix Code Formatter.
+@@ -203,11 +202,6 @@ pub fn main() -> std::io::Result<()> {
+                     (true, false) => "requires formatting",
+                 }
+             );
+-
+-            if in_place {
+-                eprintln!();
+-                eprint!("{}", random_ad());
+-            }
+         }
+
+         std::process::exit(if in_place { 0 } else { 2 });
+@@ -218,8 +212,6 @@ pub fn main() -> std::io::Result<()> {
+         eprintln!(
+             "Congratulations! Your code complies with the Alejandra style."
+         );
+-        eprintln!();
+-        eprint!("{}", random_ad());
+     }
+
+     std::process::exit(0);
+diff --git a/src/alejandra_cli/src/lib.rs b/src/alejandra_cli/src/lib.rs
+index fd49ce8..258f656 100644
+--- a/src/alejandra_cli/src/lib.rs
++++ b/src/alejandra_cli/src/lib.rs
+@@ -1,4 +1,3 @@
+-mod ads;
+ pub mod cli;
+ mod find;
+ mod verbosity;
+
+