refactor(nix): pin flake-compat in default.nix

Avoids polluting downstream flake.locks

Signed-off-by: Seth Flynn <getchoo@tuta.io>
(cherry picked from commit c367f48ec99f048f8d4bcaf0634370be33b29c62)

default.nix

@@ -1,9 +1,4 @@
-(import (
+(import (fetchTarball {
-  let
+  url = "https://github.com/edolstra/flake-compat/archive/ff81ac966bb2cae68946d5ed5fc4994f96d0ffec.tar.gz";
-    lock = builtins.fromJSON (builtins.readFile ./flake.lock);
+  sha256 = "sha256-NeCCThCEP3eCl2l/+27kNNK7QrwZB1IJCrXfrbv5oqU=";
-  in
+}) { src = ./.; }).defaultNix
-  fetchTarball {
-    url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
-    sha256 = lock.nodes.flake-compat.locked.narHash;
-  }
-) { src = ./.; }).defaultNix

flake.nix

@@ -15,26 +15,6 @@
       url = "github:PrismLauncher/libnbtplusplus";
       flake = false;
     };
-
-    /*
-      Inputs below this are optional and can be removed
-
-      ```
-      {
-        inputs.prismlauncher = {
-          url = "github:PrismLauncher/PrismLauncher";
-          inputs = {
-      	    flake-compat.follows = "";
-          };
-        };
-      }
-      ```
-    */
-
-    flake-compat = {
-      url = "github:edolstra/flake-compat";
-      flake = false;
-    };
   };
 
   outputs =

nix/README.md

@@ -44,9 +44,6 @@ Example:
       # Note that this may break the reproducibility mentioned above, and you might not be able to access the binary cache
       #
       # inputs.nixpkgs.follows = "nixpkgs";
-
-      # This is not required for Flakes
-      inputs.flake-compat.follows = "";
     };
   };
 
@@ -92,9 +89,6 @@ Example:
       # Note that this may break the reproducibility mentioned above, and you might not be able to access the binary cache
       #
       # inputs.nixpkgs.follows = "nixpkgs";
-
-      # This is not required for Flakes
-      inputs.flake-compat.follows = "";
     };
   };