diff --git a/flake.lock b/flake.lock
index 43a2f25..c5f1fea 100644
--- a/flake.lock
+++ b/flake.lock
@@ -49,6 +49,23 @@
         "type": "github"
       }
     },
+    "crate2nix_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1608814925,
+        "narHash": "sha256-GdFBG2LmpbY4C1OJBFfWLMKXzGyFq4mJBK+SVMNNE+8=",
+        "owner": "balsoft",
+        "repo": "crate2nix",
+        "rev": "68be3d90f31bf0bfd525da77e0ae6e89f48abd24",
+        "type": "github"
+      },
+      "original": {
+        "owner": "balsoft",
+        "ref": "tools-nix-version-comparison",
+        "repo": "crate2nix",
+        "type": "github"
+      }
+    },
     "crdt": {
       "flake": false,
       "locked": {
@@ -133,6 +150,37 @@
         "type": "github"
       }
     },
+    "flake-compat_3": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1606424373,
+        "narHash": "sha256-oq8d4//CJOrVj+EcOaSXvMebvuTkmBJuT5tzlfewUnQ=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "99f1c2157fba4bfe6211a321fd0ee43199025dbf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1614513358,
+        "narHash": "sha256-LakhOx3S1dRjnh0b5Dg3mbZyH0ToC9I8Y2wKSkBaTzU=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5466c5bbece17adaab2d82fae80b46e807611bf3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "haskell-nix": {
       "locked": {
         "lastModified": 1587989559,
@@ -149,9 +197,31 @@
         "type": "github"
       }
     },
+    "himalaya": {
+      "inputs": {
+        "crate2nix": "crate2nix",
+        "flake-compat": "flake-compat_3",
+        "nixpkgs": "nixpkgs_2",
+        "rust-overlay": "rust-overlay",
+        "utils": "utils_2"
+      },
+      "locked": {
+        "lastModified": 1621010971,
+        "narHash": "sha256-45f23KNCn1EamHdfTGFT4Q7FV7UazJaZfHJe84KUwzI=",
+        "owner": "soywod",
+        "repo": "himalaya",
+        "rev": "c9e1609ea98c0bdb46994058e99f644494f61f1e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "soywod",
+        "repo": "himalaya",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": "nixpkgs_4"
       },
       "locked": {
         "lastModified": 1620423550,
@@ -169,7 +239,7 @@
     },
     "lambda-launcher": {
       "inputs": {
-        "nixpkgs": "nixpkgs_3"
+        "nixpkgs": "nixpkgs_5"
       },
       "locked": {
         "lastModified": 1612816152,
@@ -242,7 +312,7 @@
     "nix": {
       "inputs": {
         "lowdown-src": "lowdown-src",
-        "nixpkgs": "nixpkgs_4"
+        "nixpkgs": "nixpkgs_6"
       },
       "locked": {
         "lastModified": 1620308124,
@@ -339,6 +409,37 @@
       }
     },
     "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1617636226,
+        "narHash": "sha256-iZhBWrOR2DoDs1C+0FlnM9AQLMol/qoGQ+d+S43CKJM=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "3d1a7716d7f1fccbd7d30ab3b2ed3db831f43bde",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1617325113,
+        "narHash": "sha256-GksR0nvGxfZ79T91UUtWjjccxazv6Yh/MvEJ82v1Xmw=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "54c1e44240d8a527a8f4892608c4bce5440c3ecb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_4": {
       "locked": {
         "lastModified": 1620425984,
         "narHash": "sha256-RwHSY3jyQ6YAOTjeppfIBcfR+Y/0GNwKOIP3N9MTYQI=",
@@ -352,7 +453,7 @@
         "type": "indirect"
       }
     },
-    "nixpkgs_3": {
+    "nixpkgs_5": {
       "locked": {
         "lastModified": 1592810120,
         "narHash": "sha256-1xlD1OIs75DvjkWpyZcQBjdu/IgugspPpz8CsBeutaM=",
@@ -368,7 +469,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_4": {
+    "nixpkgs_6": {
       "locked": {
         "lastModified": 1614309161,
         "narHash": "sha256-93kRxDPyEW9QIpxU71kCaV1r+hgOgP6/aVgC7vvO8IU=",
@@ -383,7 +484,7 @@
         "type": "indirect"
       }
     },
-    "nixpkgs_5": {
+    "nixpkgs_7": {
       "locked": {
         "lastModified": 1620340338,
         "narHash": "sha256-Op/4K0+Z9Sp5jtFH0s/zMM4H7VFZxrekcAmjQ6JpQ4w=",
@@ -399,7 +500,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_6": {
+    "nixpkgs_8": {
       "locked": {
         "lastModified": 1599773960,
         "narHash": "sha256-5bL52aaUOOyOBjgKh9/6jQlFbeE+WfVX7dpvjohmD+w=",
@@ -414,7 +515,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_7": {
+    "nixpkgs_9": {
       "locked": {
         "lastModified": 1587390417,
         "narHash": "sha256-dLQebnBviLNiN2Ei3Iqyxm73EFwz77YcvitvMYwRNA8=",
@@ -454,13 +555,14 @@
         "deploy-rs": "deploy-rs",
         "emacs-overlay": "emacs-overlay",
         "flake-compat": "flake-compat_2",
+        "himalaya": "himalaya",
         "home-manager": "home-manager",
         "lambda-launcher": "lambda-launcher",
         "materia-theme": "materia-theme",
         "nix": "nix",
         "nix-zsh-completions": "nix-zsh-completions",
         "nixos-fhs-compat": "nixos-fhs-compat",
-        "nixpkgs": "nixpkgs_5",
+        "nixpkgs": "nixpkgs_7",
         "nixpkgs-old": "nixpkgs-old",
         "nixpkgs-wayland": "nixpkgs-wayland",
         "pipewire": "pipewire",
@@ -474,6 +576,25 @@
         "yt-utilities": "yt-utilities"
       }
     },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs_3"
+      },
+      "locked": {
+        "lastModified": 1617848844,
+        "narHash": "sha256-nhPuATSHRrzfZNjtl8zmMhZklYFCHiQd7+uf+jQbd+o=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "70330a767d25daa6063e89e38d68b94b2d971831",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
     "simple-nixos-mailserver": {
       "flake": false,
       "locked": {
@@ -492,8 +613,8 @@
     },
     "simple-osd-daemons": {
       "inputs": {
-        "crate2nix": "crate2nix",
-        "nixpkgs": "nixpkgs_6"
+        "crate2nix": "crate2nix_2",
+        "nixpkgs": "nixpkgs_8"
       },
       "locked": {
         "lastModified": 1615418763,
@@ -556,6 +677,21 @@
         "type": "github"
       }
     },
+    "utils_2": {
+      "locked": {
+        "lastModified": 1617631617,
+        "narHash": "sha256-PARRCz55qN3gy07VJZIlFeOX420d0nGF0RzGI/9hVlw=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b2c27d1a81b0dc266270fa8aeecebbd1807fc610",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "wee-slack": {
       "flake": false,
       "locked": {
@@ -607,7 +743,7 @@
     "yt-utilities": {
       "inputs": {
         "haskell-nix": "haskell-nix",
-        "nixpkgs": "nixpkgs_7"
+        "nixpkgs": "nixpkgs_9"
       },
       "locked": {
         "lastModified": 1588006875,
diff --git a/flake.nix b/flake.nix
index 45c849c..25f9fb8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -71,6 +71,7 @@
       url = "git+https://gitlab.freedesktop.org/pvir/pipewire?ref=bt-mic-volume";
       flake = false;
     };
+    himalaya.url = "github:soywod/himalaya";
   };
 
   outputs = { nixpkgs, nix, self, deploy-rs, ... }@inputs: {
diff --git a/modules/applications/packages.nix b/modules/applications/packages.nix
index 39a9615..bbfdd00 100644
--- a/modules/applications/packages.nix
+++ b/modules/applications/packages.nix
@@ -41,5 +41,6 @@
       gnome3.simple-scan
       shellcheck
       proselint
+      inputs.himalaya.defaultPackage.x86_64-linux
     ];
 }