use iA Quattro and Mono as sans & mono fonts

also fix nix builds

flake.lock

···
         "url": "https://unpkg.com/htmx.org@2.0.4/dist/htmx.min.js"
       }
     },
+    "ia-fonts-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1686932517,
+        "narHash": "sha256-2T165nFfCzO65/PIHauJA//S+zug5nUwPcg8NUEydfc=",
+        "owner": "iaolo",
+        "repo": "iA-Fonts",
+        "rev": "f32c04c3058a75d7ce28919ce70fe8800817491b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "iaolo",
+        "repo": "iA-Fonts",
+        "type": "github"
+      }
+    },
     "indigo": {
       "flake": false,
       "locked": {
···
       "inputs": {
         "gitignore": "gitignore",
         "htmx-src": "htmx-src",
+        "ia-fonts-src": "ia-fonts-src",
         "indigo": "indigo",
         "lucide-src": "lucide-src",
         "nixpkgs": "nixpkgs"

flake.nix

···
       url = "https://unpkg.com/lucide@latest";
       flake = false;
     };
+    ia-fonts-src = {
+      url = "github:iaolo/iA-Fonts";
+      flake = false;
+    };
     gitignore = {
       url = "github:hercules-ci/gitignore.nix";
       inputs.nixpkgs.follows = "nixpkgs";
···
     htmx-src,
     lucide-src,
     gitignore,
+    ia-fonts-src,
   }: let
     supportedSystems = ["x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin"];
     forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
···
           '';
           doCheck = false;
           subPackages = ["cmd/appview"];
-          vendorHash = "sha256-u9LwvapAwyVOIOAag0IRrk+ot6B0PaqyEnt0EeJciGQ=";
+          vendorHash = "sha256-ywhhGrv8KNqy9tCMCnA1PU/RQ/+0Xyitej1L48TcFvI=";
           env.CGO_ENABLED = 1;
           stdenv = pkgsStatic.stdenv;
         };
···
           version = "0.1.0";
           src = gitignoreSource ./.;
           subPackages = ["cmd/knotserver"];
-          vendorHash = "sha256-t7lWrCyFWCI7zjUcC6XNWzCrUPSCFnFu9gTmRTsYrz0=";
+          vendorHash = "sha256-ywhhGrv8KNqy9tCMCnA1PU/RQ/+0Xyitej1L48TcFvI=";
           env.CGO_ENABLED = 1;
         };
       repoguard = with final;
···
           version = "0.1.0";
           src = gitignoreSource ./.;
           subPackages = ["cmd/repoguard"];
-          vendorHash = "sha256-t7lWrCyFWCI7zjUcC6XNWzCrUPSCFnFu9gTmRTsYrz0=";
+          vendorHash = "sha256-ywhhGrv8KNqy9tCMCnA1PU/RQ/+0Xyitej1L48TcFvI=";
           env.CGO_ENABLED = 0;
         };
       keyfetch = with final;
···
           version = "0.1.0";
           src = gitignoreSource ./.;
           subPackages = ["cmd/keyfetch"];
-          vendorHash = "sha256-t7lWrCyFWCI7zjUcC6XNWzCrUPSCFnFu9gTmRTsYrz0=";
+          vendorHash = "sha256-ywhhGrv8KNqy9tCMCnA1PU/RQ/+0Xyitej1L48TcFvI=";
           env.CGO_ENABLED = 0;
         };
     };
···
           pkgs.websocat
           pkgs.tailwindcss
         ];
+        shellHook = ''
+            cp -f ${htmx-src} appview/pages/static/htmx.min.js
+            cp -f ${lucide-src} appview/pages/static/lucide.min.js
+            cp -f ${ia-fonts-src}/"iA Writer Quattro"/Static/*.ttf appview/pages/static/fonts/
+            cp -f ${ia-fonts-src}/"iA Writer Mono"/Static/*.ttf appview/pages/static/fonts/
+        '';
       };
     });
     apps = forAllSystems (system: let

go.mod

···
 
 require (
 	github.com/Blank-Xu/sql-adapter v1.1.1
+	github.com/alecthomas/chroma/v2 v2.15.0
 	github.com/bluekeyes/go-gitdiff v0.8.0
 	github.com/bluesky-social/indigo v0.0.0-20250123072624-9e3b84fdbb20
 	github.com/bluesky-social/jetstream v0.0.0-20241210005130-ea96859b93d1
···
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/ProtonMail/go-crypto v1.0.0 // indirect
 	github.com/acomagu/bufpipe v1.0.4 // indirect
-	github.com/alecthomas/chroma/v2 v2.15.0 // indirect
 	github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be // indirect
 	github.com/aymerick/douceur v0.2.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect

go.sum

···
 github.com/ProtonMail/go-crypto v1.0.0/go.mod h1:EjAoLdwvbIOoOQr3ihjnSoLZRtE8azugULFRteWMNc0=
 github.com/acomagu/bufpipe v1.0.4 h1:e3H4WUzM3npvo5uv95QuJM3cQspFNtFBzvJ2oNjKIDQ=
 github.com/acomagu/bufpipe v1.0.4/go.mod h1:mxdxdup/WdsKVreO5GpW4+M/1CE2sMG4jeGJ2sYmHc4=
+github.com/alecthomas/assert/v2 v2.11.0 h1:2Q9r3ki8+JYXvGsDyBXwH3LcJ+WK5D0gc5E8vS6K3D0=
+github.com/alecthomas/assert/v2 v2.11.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
 github.com/alecthomas/chroma/v2 v2.15.0 h1:LxXTQHFoYrstG2nnV9y2X5O94sOBzf0CIUpSTbpxvMc=
 github.com/alecthomas/chroma/v2 v2.15.0/go.mod h1:gUhVLrPDXPtp/f+L1jo9xepo9gL4eLwRuGAunSZMkio=
+github.com/alecthomas/repr v0.4.0 h1:GhI2A8MACjfegCPVq9f1FLvIBS+DrQ2KQBFZP1iFzXc=
+github.com/alecthomas/repr v0.4.0/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
 github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be h1:9AeTilPcZAjCFIImctFaOjnTIavg87rW78vTPkQqLI8=
 github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be/go.mod h1:ySMOLuWl6zY27l47sB3qLNK6tF2fkHG55UZxx8oIVo4=
 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5 h1:0CwZNZbxp69SHPdPJAN/hZIm0C4OItdklCFmMRWYpio=
···
 github.com/hashicorp/golang-lru v1.0.2/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
 github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
 github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
+github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
+github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
 github.com/imdario/mergo v0.3.13/go.mod h1:4lJ1jqUDcsbIECGy0RUJAXNIhg+6ocWgb1ALK2O4oXg=
 github.com/imdario/mergo v0.3.16 h1:wwQJbIsHYGMUyLSPrEq1CT16AhnhNJQ51+4fdHUnCl4=
 github.com/imdario/mergo v0.3.16/go.mod h1:WBLT9ZmE3lPoWsEzCh9LPo3TiwVN+ZKEjmz+hD27ysY=

input.css

···
 @tailwind utilities;
 @layer base {
     @font-face {
+      font-family: 'iA Writer Quattro S';
+      src: url('/static/fonts/iAWriterQuattroS-Regular.ttf') format('truetype');
+      font-weight: normal;
+      font-style: normal;
+      font-display: swap;
+      font-feature-settings: "calt" 1, "kern" 1;
+    }
+    @font-face {
+      font-family: 'iA Writer Quattro S';
+      src: url('/static/fonts/iAWriterQuattroS-Bold.ttf') format('truetype');
+      font-weight: bold;
+      font-style: normal;
+      font-display: swap;
+    }
+    @font-face {
+      font-family: 'iA Writer Quattro S';
+      src: url('/static/fonts/iAWriterQuattroS-Italic.ttf') format('truetype');
+      font-weight: normal;
+      font-style: italic;
+      font-display: swap;
+    }
+    @font-face {
+      font-family: 'iA Writer Quattro S';
+      src: url('/static/fonts/iAWriterQuattroS-BoldItalic.ttf') format('truetype');
+      font-weight: bold;
+      font-style: italic;
+      font-display: swap;
+    }
+
+    @font-face {
+      font-family: 'iA Writer Mono S';
+      src: url('/static/fonts/iAWriterMonoS-Regular.ttf') format('truetype');
+      font-weight: normal;
+      font-style: normal;
+      font-display: swap;
+    }
+    @font-face {
+      font-family: 'iA Writer Mono S';
+      src: url('/static/fonts/iAWriterMonoS-Bold.ttf') format('truetype');
+      font-weight: bold;
+      font-style: normal;
+      font-display: swap;
+    }
+    @font-face {
+      font-family: 'iA Writer Mono S';
+      src: url('/static/fonts/iAWriterMonoS-Italic.ttf') format('truetype');
+      font-weight: normal;
+      font-style: italic;
+      font-display: swap;
+    }
+    @font-face {
+      font-family: 'iA Writer Mono S';
+      src: url('/static/fonts/iAWriterMonoS-BoldItalic.ttf') format('truetype');
+      font-weight: bold;
+      font-style: italic;
+      font-display: swap;
+    }
+
+    @font-face {
         font-family: "Inter";
         font-style: normal;
         font-weight: 400;
···
         @apply text-black;
         @apply bg-opacity-30;
     }
+
+    html {
+      letter-spacing: -0.01em;
+      word-spacing: -0.07em;
+    }
+
     a {
         @apply underline text-black hover:text-gray-800;
     }

tailwind.config.js

···
     },
     extend: {
       fontFamily: {
-        sans: ["Inter", "system-ui", "sans-serif", "ui-sans-serif"],
+        sans: ["iA Writer Quattro S", "Inter", "system-ui", "sans-serif", "ui-sans-serif"],
+        mono: ["iA Writer Mono S", "ui-monospace", "SFMono-Regular", "Menlo", "Monaco", "Consolas", "Liberation Mono", "Courier New", "monospace"],
       },
     },
   },