add IFPS module

modules/ipfs.nix

@@ -0,0 +1,38 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.sconfig.ipfs;
+in
+{
+  options.sconfig.ipfs = {
+
+    enable = lib.mkEnableOption "Turn on IPFS";
+
+    lowpower = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "enable the 'lowpower' profile in IPFS.";
+    };
+
+  };
+
+  config = lib.mkIf cfg.enable {
+
+    services.ipfs = {
+      enable = true;
+      emptyRepo = true;
+      gatewayAddress = "/ip4/127.0.0.1/tcp/8001";
+      # Had issues without fdlimit. 65536 value taken from nixpkgs example
+      serviceFdlimit = 65536;
+    };
+
+    systemd.services.ipfs = {
+      preStart = lib.mkAfter (lib.optionalString cfg.lowpower ''
+        ipfs --offline config profile apply lowpower
+      '');
+      postStart = ''
+        chmod g+r /var/lib/ipfs/config
+      '';
+    };
+
+  };
+}

modules/sean.nix

@@ -12,7 +12,16 @@ in
 
   users.users.sean = {
     isNormalUser = true;
-    extraGroups = [ "wheel" "audio" "video" "networkmanager" "dialout" "input" "wireshark" ];
+    extraGroups = [
+      "audio"
+      "dialout"
+      "input"
+      "networkmanager"
+      "video"
+      "wheel"
+      "wireshark"
+      config.services.ipfs.group
+    ];
     openssh.authorizedKeys = { inherit keys; };
   };