nix: add indigo/tap as nix package

Signed-off-by: Seongmin Lee <[e-mail]>

flake.nix

···
         knot-unwrapped = self.callPackage ./nix/pkgs/knot-unwrapped.nix {};
         knot = self.callPackage ./nix/pkgs/knot.nix {};
         dolly = self.callPackage ./nix/pkgs/dolly.nix {};
+        tap = self.callPackage ./nix/pkgs/tap.nix {};
       });
   in {
     overlays.default = final: prev: {
-      inherit (mkPackageSet final) lexgen goat sqlite-lib spindle knot-unwrapped knot appview docs dolly;
+      inherit (mkPackageSet final) lexgen goat sqlite-lib spindle knot-unwrapped knot appview docs dolly tap;
     };
 
     packages = forAllSystems (system: let
···
         sqlite-lib
         docs
         dolly
+        tap
         ;
 
       pkgsStatic-appview = staticPackages.appview;

nix/pkgs/tap.nix

···
+{
+  buildGoModule,
+  fetchFromGitHub,
+}:
+buildGoModule {
+  pname = "tap";
+  version = "0.1.0";
+  src = fetchFromGitHub {
+    owner = "bluesky-social";
+    repo = "indigo";
+    rev = "498ecb9693e8ae050f73234c86f340f51ad896a9";
+    sha256 = "sha256-KASCdwkg/hlKBt7RTW3e3R5J3hqJkphoarFbaMgtN1k=";
+  };
+  subPackages = ["cmd/tap"];
+  vendorHash = "sha256-UOedwNYnM8Jx6B7Y9tFcZX8IeUBESAFAPTRYk7n0yo8=";
+  doCheck = false;
+  meta = {
+    mainProgram = "tap";
+  };
+}