Add mangohud

unpacking 'https://flakehub.com/f/DeterminateSystems/determinate/%2A' into the Git cache...
unpacking 'github:NixOS/nixpkgs/90086ab7de86c9dcadbce33e38ff31d760fd2939' into the Git cache...
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/d351d0653aeb7877273920cd3e823994e7579b0b?narHash=sha256-r4GVX%2BFToWVE2My8VVZH4V0pTIpnu2ZE8/Z4uxGEMBE%3D' (2026-01-07)
  → 'github:NixOS/nixpkgs/1327e798cb055f96f92685df444e9a2c326ab5ed?narHash=sha256-F4IIxa5xDHjtrmMcayM8lHctUq1oGltfBQu2%2BoqDWP4%3D' (2026-01-12)
• Updated input 'nixpkgs-master':
    'github:NixOS/nixpkgs/d009f91bd474d996c774ea57be5e65935c778577?narHash=sha256-w8GpeC0gbKE6ftLbpZx7pgJ1zE9dPkWeOVs36tf481c%3D' (2026-01-09)
  → 'github:NixOS/nixpkgs/90086ab7de86c9dcadbce33e38ff31d760fd2939?narHash=sha256-URpwHV8DoUvnTghd9NxK8S29mGx2e4f/sv7ftXklTy8%3D' (2026-01-14)
• Updated input 'nixpkgs-unstable':
    'github:NixOS/nixpkgs/5912c1772a44e31bf1c63c0390b90501e5026886?narHash=sha256-Mj3d3PfwltLmukFal5i3fFt27L6NiKXdBezC1EBuZs4%3D' (2026-01-07)
  → 'github:NixOS/nixpkgs/ffbc9f8cbaacfb331b6017d5a5abb21a492c9a38?narHash=sha256-1Sm77VfZh3mU0F5OqKABNLWxOuDeHIlcFjsXeeiPazs%3D' (2026-01-11)

flake.lock

@@ -298,11 +298,11 @@
     },
     "nixpkgs-master": {
       "locked": {
-        "lastModified": 1767964817,
-        "narHash": "sha256-w8GpeC0gbKE6ftLbpZx7pgJ1zE9dPkWeOVs36tf481c=",
+        "lastModified": 1768391573,
+        "narHash": "sha256-URpwHV8DoUvnTghd9NxK8S29mGx2e4f/sv7ftXklTy8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d009f91bd474d996c774ea57be5e65935c778577",
+        "rev": "90086ab7de86c9dcadbce33e38ff31d760fd2939",
         "type": "github"
       },
       "original": {
@@ -330,11 +330,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1767767207,
-        "narHash": "sha256-Mj3d3PfwltLmukFal5i3fFt27L6NiKXdBezC1EBuZs4=",
+        "lastModified": 1768127708,
+        "narHash": "sha256-1Sm77VfZh3mU0F5OqKABNLWxOuDeHIlcFjsXeeiPazs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5912c1772a44e31bf1c63c0390b90501e5026886",
+        "rev": "ffbc9f8cbaacfb331b6017d5a5abb21a492c9a38",
         "type": "github"
       },
       "original": {
@@ -376,11 +376,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1767799921,
-        "narHash": "sha256-r4GVX+FToWVE2My8VVZH4V0pTIpnu2ZE8/Z4uxGEMBE=",
+        "lastModified": 1768242861,
+        "narHash": "sha256-F4IIxa5xDHjtrmMcayM8lHctUq1oGltfBQu2+oqDWP4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d351d0653aeb7877273920cd3e823994e7579b0b",
+        "rev": "1327e798cb055f96f92685df444e9a2c326ab5ed",
         "type": "github"
       },
       "original": {

hosts/hephaestus.nix

@@ -91,6 +91,7 @@
       kdePackages.sddm-kcm
       libation
       lutris
+      mangohud
       mupen64plus
       nfs-utils
       onlyoffice-desktopeditors