update a bunch of other stuff

nix/sources.json

@@ -1,14 +1,14 @@
 {
     "home-manager": {
-        "branch": "release-21.11",
+        "branch": "release-22.05",
         "description": "Manage a user environment using Nix  [maintainer=@rycee] ",
         "homepage": "https://nix-community.github.io/home-manager/",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "d93d56ab8c1c6aa575854a79b9d2f69d491db7d0",
-        "sha256": "1fi27zabvqlyc2ggg7wr01j813gs46rswg1i897h9hqkbgqsjkny",
+        "rev": "6639e3a837fc5deb6f99554072789724997bc8e5",
+        "sha256": "0vg6x7cw2bpiga9k6nlj2n1vrm4qw84721gmlhp3j1i58v100ybc",
         "type": "tarball",
-        "url": "https://github.com/nix-community/home-manager/archive/d93d56ab8c1c6aa575854a79b9d2f69d491db7d0.tar.gz",
+        "url": "https://github.com/nix-community/home-manager/archive/6639e3a837fc5deb6f99554072789724997bc8e5.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "mattermost-server": {
@@ -54,7 +54,7 @@
         "url_template": "<repo>/-/archive/<rev>.tar.gz"
     },
     "nixos-mailserver": {
-        "branch": "nixos-21.11",
+        "branch": "nixos-22.05",
         "ref": "nixos-21.11",
         "repo": "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver",
         "rev": "6e3a7b2ea6f0d68b82027b988aa25d3423787303",
@@ -64,15 +64,15 @@
         "url_template": "<repo>/-/archive/<rev>.tar.gz"
     },
     "nixpkgs": {
-        "branch": "nixos-21.11",
+        "branch": "nixos-22.05",
         "description": "Nix Packages collection",
         "homepage": "",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "eabc38219184cc3e04a974fe31857d8e0eac098d",
-        "sha256": "04ffwp2gzq0hhz7siskw6qh9ys8ragp7285vi1zh8xjksxn1msc5",
+        "rev": "df2bcbbd1c2aa144261cf1b0003c889c075dc693",
+        "sha256": "0v308fdsndcnbqibpnj0jwg19sh7l30spisjxzw3alz1nvybz3qh",
         "type": "tarball",
-        "url": "https://github.com/nixos/nixpkgs/archive/eabc38219184cc3e04a974fe31857d8e0eac098d.tar.gz",
+        "url": "https://github.com/nixos/nixpkgs/archive/df2bcbbd1c2aa144261cf1b0003c889c075dc693.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs-unstable": {