ref(home-manager): don't use home-manager when building the host

When rebuilding the host (through `nixos-rebuild switch --flake`) I
don't want to rebuild also my home-manager configuration. I want these
to be two different steps.

I rebuild the home-manager configuration more frequently and it's a
waste of time and CPU to rebuild the world every time.

This is a pretty large refactoring:
- move checks back into the flake: if I modify a check, the
  configuration for `pre-commits` is not regenerated, as the file with the
  checks is not monitored with `direnv` (I could probably configure it for
  it, but not now)
- remove `home.nix` from the host level configuration
- introduce a `mkHomeManagerConfiguration` function to manage the
  different user@host
- fix a warning with the rust overlay

1 files changed, 32 insertions, 32 deletions

diff --git a/flake.lock b/flake.lock
index 3d07120..cfd012e 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1652712410,
-        "narHash": "sha256-hMJ2TqLt0DleEnQFGUHK9sV2aAzJPU8pZeiZoqRozbE=",
+        "lastModified": 1662241716,
+        "narHash": "sha256-urqPvSvvGUhkwzTDxUI8N1nsdMysbAfjmBNZaTYBZRU=",
         "owner": "ryantm",
         "repo": "agenix",
-        "rev": "7e5e58b98c3dcbf497543ff6f22591552ebfe65b",
+        "rev": "c96da5835b76d3d8e8d99a0fec6fe32f8539ee2e",
         "type": "github"
       },
       "original": {
@@ -26,11 +26,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1654803545,
-        "narHash": "sha256-XV0gxr2looaXOKbzGn+BZsCh1NsCq7rti1ooYql6Y9g=",
+        "lastModified": 1663700519,
+        "narHash": "sha256-OA7fE3bsG81Sr3XC0tbKlkQqdCNglv1WlmEnUOvnHlI=",
         "owner": "nix-community",
         "repo": "emacs-overlay",
-        "rev": "cf5a17b22ffd987e24770d33b5b59ea496eeac49",
+        "rev": "8e54a8980aa438c4f35807ad676acbf7578acce3",
         "type": "github"
       },
       "original": {
@@ -41,11 +41,11 @@
     },
     "flake-utils": {
       "locked": {
-        "lastModified": 1653893745,
-        "narHash": "sha256-0jntwV3Z8//YwuOjzhV2sgJJPt+HY6KhU7VZUL0fKZQ=",
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "1ed9fb1935d260de5fe1c2f7ee0ebaae17ed2fa1",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
         "type": "github"
       },
       "original": {
@@ -71,11 +71,11 @@
     },
     "futils": {
       "locked": {
-        "lastModified": 1656065134,
-        "narHash": "sha256-oc6E6ByIw3oJaIyc67maaFcnjYOz1mMcOtHxbEf9NwQ=",
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "bee6a7250dd1b01844a2de7e02e4df7d8a0a206c",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
         "type": "github"
       },
       "original": {
@@ -91,11 +91,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1654113405,
-        "narHash": "sha256-VpK+0QaWG2JRgB00lw77N9TjkE3ec0iMYIX1TzGpxa4=",
+        "lastModified": 1656169755,
+        "narHash": "sha256-Nlnm4jeQWEGjYrE6hxi/7HYHjBSZ/E0RtjCYifnNsWk=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "ac2287df5a2d6f0a44bbcbd11701dbbf6ec43675",
+        "rev": "4a3d01fb53f52ac83194081272795aa4612c2381",
         "type": "github"
       },
       "original": {
@@ -108,8 +108,8 @@
     "nixpkgs": {
       "locked": {
         "lastModified": 0,
-        "narHash": "sha256-EFkgVkHuPFuzd8L5W81fZR5YEbfHirh3uDMk3xhQmhc=",
-        "path": "/nix/store/s7w8mfm95yylaxp5vp0dh1f9w59grfk8-source",
+        "narHash": "sha256-/l1HI2tFLihda6yh+j848GlRDVUiSJPr+yzA7ip8Z84=",
+        "path": "/nix/store/wi84fkkl5lq0bmf7c1jycax5vrw7fl6s-source",
         "type": "path"
       },
       "original": {
@@ -119,11 +119,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1654694478,
-        "narHash": "sha256-nFAMETXEhIrqnBe28u6vqy4ixSRr0BRrlZLlS0e7eoM=",
+        "lastModified": 1663634720,
+        "narHash": "sha256-wMYXWKgysznBUHmvq5fN0uzUTNpnBLREPupM17xP8MY=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "18de53ca965bd0678aaf09e5ce0daae05c58355a",
+        "rev": "998f0f7924198b2460458728de59fe738997f28e",
         "type": "github"
       },
       "original": {
@@ -135,11 +135,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1658355931,
-        "narHash": "sha256-/l1HI2tFLihda6yh+j848GlRDVUiSJPr+yzA7ip8Z84=",
+        "lastModified": 1663707118,
+        "narHash": "sha256-eyzwPTQqB9l/viI769epK8NwGOY8v/c2TNrRmcX5u+8=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "d2ff0167ce734340e745ca1f53b11a0996ff17a4",
+        "rev": "cafad185b7486732d6b6e0b8447588e22216c020",
         "type": "github"
       },
       "original": {
@@ -151,11 +151,11 @@
     },
     "nur": {
       "locked": {
-        "lastModified": 1654815884,
-        "narHash": "sha256-mmYhB+fl2dabl8Osm4d0vHKLxISH+lL4tAG9bsrnuIQ=",
+        "lastModified": 1663698372,
+        "narHash": "sha256-mwbkSx0g/U73DzpxkRL7KuXZtS7rZt5Ks4BbxsftHrY=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "d52f3d30fa7d0672844941450ba07159f4b30f8b",
+        "rev": "8c17e0445fe26f7d44c100f478a5855cd0385d5b",
         "type": "github"
       },
       "original": {
@@ -174,11 +174,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1656169028,
-        "narHash": "sha256-y9DRauokIeVHM7d29lwT8A+0YoGUBXV3H0VErxQeA8s=",
+        "lastModified": 1663082609,
+        "narHash": "sha256-lmCCIu4dj59qbzkGKHQtolhpIEQMeAd2XUbXVPqgPYo=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "db3bd555d3a3ceab208bed48f983ccaa6a71a25e",
+        "rev": "60cad1a326df17a8c6cf2bb23436609fdd83024e",
         "type": "github"
       },
       "original": {
@@ -209,11 +209,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1661136859,
-        "narHash": "sha256-o3y1elFGRs/9kqaIeziAnTy9lIWA6VHtQfq0ARRVO2A=",
+        "lastModified": 1663642835,
+        "narHash": "sha256-xzIWFhLR7iws7ZIu5iHlbyY5bhGQTFECf+XKEjbjwpk=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "6d1418192be90968acfa25e7d7b089e246eb15c4",
+        "rev": "c9cfed9847475dcfc8b821d6ccb0c5229b4130a1",
         "type": "github"
       },
       "original": {