refactor: mimeapps: port from home-manager -> nixos

hosts/common/home/default.nix

@@ -9,6 +9,7 @@
     ./keyring.nix
     ./kitty.nix
     ./libreoffice.nix
+    ./mime.nix
     ./mpv.nix
     ./neovim.nix
     ./newsflash.nix

hosts/common/home/mime.nix

@@ -0,0 +1,41 @@
+{ config, lib, sane-lib, ...}:
+
+let
+  www = config.sane.web-browser.browser.desktop;
+  pdf = "org.gnome.Evince.desktop";
+  md = "obsidian.desktop";
+  thumb = "org.gnome.gThumb.desktop";
+  video = "vlc.desktop";
+  # audio = "mpv.desktop";
+  audio = "vlc.desktop";
+in
+lib.mkIf config.sane.home-manager.enable
+{
+
+  # the xdg mime type for a file can be found with:
+  # - `xdg-mime query filetype path/to/thing.ext`
+  xdg.mime.enable = true;
+  xdg.mime.defaultApplications = {
+    # HTML
+    "text/html" = [ www ];
+    "x-scheme-handler/http" = [ www ];
+    "x-scheme-handler/https" = [ www ];
+    "x-scheme-handler/about" = [ www ];
+    "x-scheme-handler/unknown" = [ www ];
+    # RICH-TEXT DOCUMENTS
+    "application/pdf" = [ pdf ];
+    "text/markdown" = [ md ];
+    # IMAGES
+    "image/heif" = [ thumb ];  # apple codec
+    "image/png" = [ thumb ];
+    "image/jpeg" = [ thumb ];
+    # VIDEO
+    "video/mp4" = [ video ];
+    "video/quicktime" = [ video ];
+    "video/x-matroska" = [ video ];
+    # AUDIO
+    "audio/flac" = [ audio ];
+    "audio/mpeg" = [ audio ];
+    "audio/x-vorbis+ogg" = [ audio ];
+  };
+}

modules/home-manager/default.nix

@@ -51,41 +51,6 @@ in
       home.username = "colin";
       home.homeDirectory = "/home/colin";
 
-      # the xdg mime type for a file can be found with:
-      # - `xdg-mime query filetype path/to/thing.ext`
-      xdg.mimeApps.enable = true;
-      xdg.mimeApps.defaultApplications = let
-        www = sysconfig.sane.web-browser.browser.desktop;
-        pdf = "org.gnome.Evince.desktop";
-        md = "obsidian.desktop";
-        thumb = "org.gnome.gThumb.desktop";
-        video = "vlc.desktop";
-        # audio = "mpv.desktop";
-        audio = "vlc.desktop";
-      in {
-        # HTML
-        "text/html" = [ www ];
-        "x-scheme-handler/http" = [ www ];
-        "x-scheme-handler/https" = [ www ];
-        "x-scheme-handler/about" = [ www ];
-        "x-scheme-handler/unknown" = [ www ];
-        # RICH-TEXT DOCUMENTS
-        "application/pdf" = [ pdf ];
-        "text/markdown" = [ md ];
-        # IMAGES
-        "image/heif" = [ thumb ];  # apple codec
-        "image/png" = [ thumb ];
-        "image/jpeg" = [ thumb ];
-        # VIDEO
-        "video/mp4" = [ video ];
-        "video/quicktime" = [ video ];
-        "video/x-matroska" = [ video ];
-        # AUDIO
-        "audio/flac" = [ audio ];
-        "audio/mpeg" = [ audio ];
-        "audio/x-vorbis+ogg" = [ audio ];
-      };
-
       programs = lib.mkMerge [
         {
           home-manager.enable = true;  # this lets home-manager manage dot-files in user dirs, i think