feat(mibook): add swapfile and nodejs dev tooling

Add an 8G swapfile for headroom during nix builds (7.7G RAM, no prior
swap) and bring nodejs (bundles npm) into the development profile.
Also picks up latest flake.lock input updates.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01C5fRUDLRzDhoKhEqa69cyR

flake.lock

@@ -21,11 +21,11 @@
         "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1785627969,
-        "narHash": "sha256-4dtXQk/NMePegK/nWp5NSeuZKLATItOq61lpEvmXqGw=",
+        "lastModified": 1788450739,
+        "narHash": "sha256-glZLQlzIn1fXH6PazR2iUmTo7kzzyYSshrWhLS9TqCU=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "427bf4bd9435fdf21321c8cc628c24efc14c0f7a",
+        "rev": "31729ca8cbdb4fa927b34e5f4353e6a83f39e993",
         "type": "github"
       },
       "original": {
@@ -63,11 +63,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1782949081,
-        "narHash": "sha256-vp6Y/Grm98ESt6ceOkWiHWyZRDV3J1RID4w+6NWK9yA=",
+        "lastModified": 1785627969,
+        "narHash": "sha256-4dtXQk/NMePegK/nWp5NSeuZKLATItOq61lpEvmXqGw=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "17c9d6cdfc60c64f4ee8d306f9bc0b4ccb51481e",
+        "rev": "427bf4bd9435fdf21321c8cc628c24efc14c0f7a",
         "type": "github"
       },
       "original": {
@@ -87,11 +87,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1783008725,
-        "narHash": "sha256-jGiy6+sxjNWXSjp25uoJuNfyH9zBK1PEDY0lVoL4ibQ=",
+        "lastModified": 1784288435,
+        "narHash": "sha256-ReRHaLgr/uVqdD8afFSn+myXIfpHeOhP0yYe0TJqAA8=",
         "owner": "cachix",
         "repo": "git-hooks.nix",
-        "rev": "bca82caa46d5ec0f5d422c61fb1e30bc51313cbe",
+        "rev": "43b3c1ab9d40fb1dbb008f451988a91e375825e9",
         "type": "github"
       },
       "original": {
@@ -113,11 +113,11 @@
         "uv2nix": "uv2nix"
       },
       "locked": {
-        "lastModified": 1788877844,
-        "narHash": "sha256-9Ik9egIxYhW/IDw1mz/dYN0IqLTP3bEe+LdEFtP9FWM=",
+        "lastModified": 1789361774,
+        "narHash": "sha256-ashkMxyQelHq7T4AcJ0Zwuzm9/jMR3hTCWW+2FPwlDg=",
         "owner": "NousResearch",
         "repo": "hermes-agent",
-        "rev": "c8aa5608c24e3636e77c267650c0f1f52e44adb0",
+        "rev": "5eb99eb2844b22ebb723711b8e6a0bbb80bb5f04",
         "type": "github"
       },
       "original": {
@@ -157,11 +157,11 @@
         "nixpkgs-regression": "nixpkgs-regression"
       },
       "locked": {
-        "lastModified": 1787274306,
-        "narHash": "sha256-Qg9f9td5iphUWSQS6zmvyZWO1F+D7j8Z3U6dGyUTg08=",
+        "lastModified": 1789352761,
+        "narHash": "sha256-jAcDj4iXkbxa5AlooMRZj7H3E81Cz/q7yN/bX7GPFSU=",
         "owner": "NixOS",
         "repo": "nix",
-        "rev": "649e823fb24ed118d72e613be35fa8ea1b64afe7",
+        "rev": "920f6956361496578b8a97ae04ec5f400d729ab4",
         "type": "github"
       },
       "original": {
@@ -211,11 +211,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1787144466,
-        "narHash": "sha256-HHfv2/HkNSKbbSyU9iD/g8lbP6r4tl33sSw1W4rXCk0=",
+        "lastModified": 1789127271,
+        "narHash": "sha256-vL/Fpo7Zxa7wvO8V5FAToUBvP+K3XsMB1wUglTtd/J0=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "0471accf8d0a8210b31d947497d179ecc99e0021",
+        "rev": "24cfdc1f9344b90a1eee329a3906e2f39f4d0f1e",
         "type": "github"
       },
       "original": {
@@ -226,11 +226,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1783148766,
-        "narHash": "sha256-H9+N+GFtsbVC8ZniHliChM7ndizxtqVZs6bnGOLM3WQ=",
-        "rev": "a50de1b7d8a586adc18d2395c19de7d6058e6030",
+        "lastModified": 1788921488,
+        "narHash": "sha256-JLopN/XSodSsJIZ7v7tEjpPZ+QXc883s3HoUIxHD8Io=",
+        "rev": "6aefcda9401be8acc2b74244fb3b37520ea1f0a8",
         "type": "tarball",
-        "url": "https://releases.nixos.org/nixos/26.05/nixos-26.05.4193.a50de1b7d8a5/nixexprs.tar.xz"
+        "url": "https://releases.nixos.org/nixos/26.05/nixos-26.05.9440.6aefcda9401b/nixexprs.tar.xz"
       },
       "original": {
         "type": "tarball",
@@ -255,11 +255,11 @@
     },
     "nixpkgs-lib": {
       "locked": {
-        "lastModified": 1785031560,
-        "narHash": "sha256-OmshNvn2vupOFpYinLUu+1Dnpu4n7Q5N3ggGVNHpkUI=",
+        "lastModified": 1788057806,
+        "narHash": "sha256-DTQSMxzDWmT0zhguthvegnVkn7CFqGCv4IHCzk5ZUpM=",
         "owner": "nix-community",
         "repo": "nixpkgs.lib",
-        "rev": "0e79af5e3d4dcfcd676ab5ba3f95d2e3352e078c",
+        "rev": "596e2e3940e09b2abbeb03f75fa1828c57fcd72c",
         "type": "github"
       },
       "original": {
@@ -286,11 +286,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1787135253,
-        "narHash": "sha256-M5/r2v++FjVhdsxXYMb4BDJ5YLAdCWFt3aZotcshocA=",
-        "rev": "ffb3c9b700e759be2ef13237c9d8f953b32a1e46",
+        "lastModified": 1789286504,
+        "narHash": "sha256-3i80JnZ9pZ7tWReb/Sqpc32cfzffCu8TWLnbnH0hN9c=",
+        "rev": "ef34387ddd751e1ab8857adf4676492d32eb24ec",
         "type": "tarball",
-        "url": "https://releases.nixos.org/nixos/unstable/nixos-26.11pre1058091.ffb3c9b700e7/nixexprs.tar.xz"
+        "url": "https://releases.nixos.org/nixos/unstable/nixos-26.11pre1073009.ef34387ddd75/nixexprs.tar.xz"
       },
       "original": {
         "id": "nixpkgs",
@@ -313,11 +313,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1787101114,
-        "narHash": "sha256-BA7sSNjLDuPGSOYBGpr6WQjke1MQ8AZpJ8GlYZM/mOc=",
-        "rev": "b18a4b905f8d028dc4476412e6d6891728695379",
+        "lastModified": 1789114715,
+        "narHash": "sha256-eeH+/1GxEjw8NCObjaHVIy3YvCQ4Qckrx4LZj5xBaU4=",
+        "rev": "21a67dc470149f337cecafbe965d8d252a390518",
         "type": "tarball",
-        "url": "https://releases.nixos.org/nixos/26.05/nixos-26.05.8045.b18a4b905f8d/nixexprs.tar.xz"
+        "url": "https://releases.nixos.org/nixos/26.05/nixos-26.05.9592.21a67dc47014/nixexprs.tar.xz"
       },
       "original": {
         "id": "nixpkgs",
@@ -415,11 +415,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1788337237,
-        "narHash": "sha256-gkSH8VUtCo6hnysNmb9DbTuDepH2t5pv+QWjP75xKAk=",
+        "lastModified": 1788914643,
+        "narHash": "sha256-4GuMPW90JSxXWDPUB9M+1m7fYbe3H0apOd86/zBQ2Kw=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "fbf759290e0cb0a98dfc813a4eb7d53ad1dacb57",
+        "rev": "13616fff713a9f94055c66f15687ebdc17a335df",
         "type": "github"
       },
       "original": {

machines/mibook/configuration.nix

@@ -16,6 +16,13 @@
   ];
 
   networking.hostName = "mibook";
+
+  swapDevices = [
+    {
+      device = "/var/lib/swapfile";
+      size = 8 * 1024; # 8G, headroom for nix builds (7.7G RAM, no prior swap)
+    }
+  ];
   boot.loader.grub = {
     enable = true;
     device = "/dev/nvme0n1";

modules/environments/development/default.nix

@@ -21,6 +21,7 @@ in
       neovim
       # jetbrains.idea-ultimate
       go
+      nodejs # bundles npm
       (python3.withPackages (
         ps: with ps; [
           jupyter # notebooks