npins: add npins

nix/configurations/vanadium.nix

@@ -58,6 +58,7 @@ in
           ../overlays/calibre-no-mime.nix
           ../overlays/fcitx5-table-extra-taiwanese.nix
           ../overlays/ghostty-dev.nix
+          ../overlays/npins.nix
 
           ../overlays/iosevka.nix
           ../packages/overlay.nix

nix/overlays/npins.nix

@@ -0,0 +1,6 @@
+let
+  sources = import ../../npins;
+in
+final: _: {
+  npins = import sources.npins { pkgs = final; };
+}

npins/sources.json

@@ -185,6 +185,22 @@
       "url": "https://github.com/nixos/nixpkgs/archive/ff8a91eb93e8abfceed1957330b54e54e99c747a.tar.gz",
       "hash": "0j0410wjpkxix1sxfr3fpd60iqvjrkgydiis7rqr4g44y042dfns"
     },
+    "npins": {
+      "type": "GitRelease",
+      "repository": {
+        "type": "GitHub",
+        "owner": "andir",
+        "repo": "npins"
+      },
+      "pre_releases": false,
+      "version_upper_bound": "0.5",
+      "release_prefix": null,
+      "submodules": false,
+      "version": "0.4.0",
+      "revision": "52904b878c2db61e062b63beb07784d41f98c765",
+      "url": "https://api.github.com/repos/andir/npins/tarball/0.4.0",
+      "hash": "07n256q07k1f0nm92nqgihm71xyrg9293w6ib3r92vmqpf5rghwj"
+    },
     "nur": {
       "type": "Git",
       "repository": {