colmena override bash->fish maintain posix compliance, and began make wishlist.nix flake

flakes/wishlist.nix

@@ -0,0 +1,44 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+    flake-utils,
+  }: {
+    # TODO: 1. add options (ie one to set whether the server should be enabled),
+    #       2. create a systemd service
+    #       3. create a main program
+    #       4. celibrate
+
+    packages = flake-utils.lib.eachDefaultSystem (
+      system: let
+        version = "0.15.1";
+        pkgs = nixpkgs.legacyPackages.${system};
+        lib = pkgs.lib;
+      in {
+        wishlist = pkgs.buildGoModule {
+          pname = "wishlist";
+          inherit version;
+          meta = with lib; {
+            homepage = "https://github.com/charmbracelet/wishlist";
+            description = "Your SSH directory.";
+            license = licenses.mit;
+            maintainers = with maintainers; [caarlos0];
+          };
+
+          src = pkgs.fetchFromGithub {
+            owner = "charmbracelet";
+            repo = "wishlist";
+            rev = "v${version}"; # TODO: is this ok? should this be a hash instead?
+            hash = "0c9g1s8j9znzd1mw61d0klc6sqri0wx6hljibxdwzi3cabfy3ld6";
+          };
+          vendorSha256 = lib.fakeSha256;
+        };
+      }
+    );
+  };
+}