chore: fix and add a check for the nix devshell (#1656)

* chore: fix nix devshell (`nix develop`)

* chore: add a `nix flake check` for the devShell

Author: yvan-sraka

flake.lock

@@ -7,9 +7,10 @@
     nix2container.url = "github:nlewo/nix2container";
     nix-editor.url = "github:snowfallorg/nix-editor";
     rust-overlay.url = "github:oxalica/rust-overlay";
+    nix-fast-build.url = "github:Mic92/nix-fast-build";
   };
 
-  outputs = { self, nixpkgs, flake-utils, nix-editor, rust-overlay, nix2container, ... }:
+  outputs = { self, nixpkgs, flake-utils, nix-editor, rust-overlay, nix2container, ... }@inputs:
     let
       gitRev = "vcs=${self.shortRev or "dirty"}+${builtins.substring 0 8 (self.lastModifiedDate or self.lastModified or "19700101")}";
 
@@ -1380,6 +1381,7 @@
           psql_17 = makeCheckHarness basePackages.psql_17.bin;
           psql_orioledb-17 = makeCheckHarness basePackages.psql_orioledb-17.bin;
           inherit (basePackages) wal-g-2 wal-g-3 dbmate-tool pg_regress;
+          devShell = devShells.default;
         } // pkgs.lib.optionalAttrs (system == "aarch64-linux") {
           inherit (basePackages) postgresql_15_debug postgresql_15_src postgresql_orioledb-17_debug postgresql_orioledb-17_src postgresql_17_debug postgresql_17_src;
         };
@@ -1429,6 +1431,7 @@
                 export HISTFILE=.history
               '';
             };
+            nix-fast-build = inputs.nix-fast-build.packages.${system}.default;
           in
           {
             default = pkgs.mkShell {