uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

nixos/modules/config/networking.nix

@@ -0,0 +1,237 @@
+# /etc files related to networking, such as /etc/services.
+
+{ config, lib, options, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.networking;
+  opt = options.networking;
+
+  localhostMultiple = any (elem "localhost") (attrValues (removeAttrs cfg.hosts [ "127.0.0.1" "::1" ]));
+
+in
+
+{
+  imports = [
+    (mkRemovedOptionModule [ "networking" "hostConf" ] "Use environment.etc.\"host.conf\" instead.")
+  ];
+
+  options = {
+
+    networking.hosts = lib.mkOption {
+      type = types.attrsOf (types.listOf types.str);
+      example = literalExpression ''
+        {
+          "127.0.0.1" = [ "foo.bar.baz" ];
+          "192.168.0.2" = [ "fileserver.local" "nameserver.local" ];
+        };
+      '';
+      description = ''
+        Locally defined maps of hostnames to IP addresses.
+      '';
+    };
+
+    networking.hostFiles = lib.mkOption {
+      type = types.listOf types.path;
+      defaultText = literalDocBook "Hosts from <option>networking.hosts</option> and <option>networking.extraHosts</option>";
+      example = literalExpression ''[ "''${pkgs.my-blocklist-package}/share/my-blocklist/hosts" ]'';
+      description = ''
+        Files that should be concatenated together to form <filename>/etc/hosts</filename>.
+      '';
+    };
+
+    networking.extraHosts = lib.mkOption {
+      type = types.lines;
+      default = "";
+      example = "192.168.0.1 lanlocalhost";
+      description = ''
+        Additional verbatim entries to be appended to <filename>/etc/hosts</filename>.
+        For adding hosts from derivation results, use <option>networking.hostFiles</option> instead.
+      '';
+    };
+
+    networking.timeServers = mkOption {
+      default = [
+        "0.nixos.pool.ntp.org"
+        "1.nixos.pool.ntp.org"
+        "2.nixos.pool.ntp.org"
+        "3.nixos.pool.ntp.org"
+      ];
+      type = types.listOf types.str;
+      description = ''
+        The set of NTP servers from which to synchronise.
+      '';
+    };
+
+    networking.proxy = {
+
+      default = lib.mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          This option specifies the default value for httpProxy, httpsProxy, ftpProxy and rsyncProxy.
+        '';
+        example = "http://127.0.0.1:3128";
+      };
+
+      httpProxy = lib.mkOption {
+        type = types.nullOr types.str;
+        default = cfg.proxy.default;
+        defaultText = literalExpression "config.${opt.proxy.default}";
+        description = ''
+          This option specifies the http_proxy environment variable.
+        '';
+        example = "http://127.0.0.1:3128";
+      };
+
+      httpsProxy = lib.mkOption {
+        type = types.nullOr types.str;
+        default = cfg.proxy.default;
+        defaultText = literalExpression "config.${opt.proxy.default}";
+        description = ''
+          This option specifies the https_proxy environment variable.
+        '';
+        example = "http://127.0.0.1:3128";
+      };
+
+      ftpProxy = lib.mkOption {
+        type = types.nullOr types.str;
+        default = cfg.proxy.default;
+        defaultText = literalExpression "config.${opt.proxy.default}";
+        description = ''
+          This option specifies the ftp_proxy environment variable.
+        '';
+        example = "http://127.0.0.1:3128";
+      };
+
+      rsyncProxy = lib.mkOption {
+        type = types.nullOr types.str;
+        default = cfg.proxy.default;
+        defaultText = literalExpression "config.${opt.proxy.default}";
+        description = ''
+          This option specifies the rsync_proxy environment variable.
+        '';
+        example = "http://127.0.0.1:3128";
+      };
+
+      allProxy = lib.mkOption {
+        type = types.nullOr types.str;
+        default = cfg.proxy.default;
+        defaultText = literalExpression "config.${opt.proxy.default}";
+        description = ''
+          This option specifies the all_proxy environment variable.
+        '';
+        example = "http://127.0.0.1:3128";
+      };
+
+      noProxy = lib.mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          This option specifies the no_proxy environment variable.
+          If a default proxy is used and noProxy is null,
+          then noProxy will be set to 127.0.0.1,localhost.
+        '';
+        example = "127.0.0.1,localhost,.localdomain";
+      };
+
+      envVars = lib.mkOption {
+        type = types.attrs;
+        internal = true;
+        default = {};
+        description = ''
+          Environment variables used for the network proxy.
+        '';
+      };
+    };
+  };
+
+  config = {
+
+    assertions = [{
+      assertion = !localhostMultiple;
+      message = ''
+        `networking.hosts` maps "localhost" to something other than "127.0.0.1"
+        or "::1". This will break some applications. Please use
+        `networking.extraHosts` if you really want to add such a mapping.
+      '';
+    }];
+
+    # These entries are required for "hostname -f" and to resolve both the
+    # hostname and FQDN correctly:
+    networking.hosts = let
+      hostnames = # Note: The FQDN (canonical hostname) has to come first:
+        optional (cfg.hostName != "" && cfg.domain != null) "${cfg.hostName}.${cfg.domain}"
+        ++ optional (cfg.hostName != "") cfg.hostName; # Then the hostname (without the domain)
+    in {
+      "127.0.0.2" = hostnames;
+    } // optionalAttrs cfg.enableIPv6 {
+      "::1" = hostnames;
+    };
+
+    networking.hostFiles = let
+      # Note: localhostHosts has to appear first in /etc/hosts so that 127.0.0.1
+      # resolves back to "localhost" (as some applications assume) instead of
+      # the FQDN! By default "networking.hosts" also contains entries for the
+      # FQDN so that e.g. "hostname -f" works correctly.
+      localhostHosts = pkgs.writeText "localhost-hosts" ''
+        127.0.0.1 localhost
+        ${optionalString cfg.enableIPv6 "::1 localhost"}
+      '';
+      stringHosts =
+        let
+          oneToString = set: ip: ip + " " + concatStringsSep " " set.${ip} + "\n";
+          allToString = set: concatMapStrings (oneToString set) (attrNames set);
+        in pkgs.writeText "string-hosts" (allToString (filterAttrs (_: v: v != []) cfg.hosts));
+      extraHosts = pkgs.writeText "extra-hosts" cfg.extraHosts;
+    in mkBefore [ localhostHosts stringHosts extraHosts ];
+
+    environment.etc =
+      { # /etc/services: TCP/UDP port assignments.
+        services.source = pkgs.iana-etc + "/etc/services";
+
+        # /etc/protocols: IP protocol numbers.
+        protocols.source  = pkgs.iana-etc + "/etc/protocols";
+
+        # /etc/hosts: Hostname-to-IP mappings.
+        hosts.source = pkgs.concatText "hosts" cfg.hostFiles;
+
+        # /etc/netgroup: Network-wide groups.
+        netgroup.text = mkDefault "";
+
+        # /etc/host.conf: resolver configuration file
+        "host.conf".text = ''
+          multi on
+        '';
+
+      } // optionalAttrs (pkgs.stdenv.hostPlatform.libc == "glibc") {
+        # /etc/rpc: RPC program numbers.
+        rpc.source = pkgs.stdenv.cc.libc.out + "/etc/rpc";
+      };
+
+      networking.proxy.envVars =
+        optionalAttrs (cfg.proxy.default != null) {
+          # other options already fallback to proxy.default
+          no_proxy = "127.0.0.1,localhost";
+        } // optionalAttrs (cfg.proxy.httpProxy != null) {
+          http_proxy  = cfg.proxy.httpProxy;
+        } // optionalAttrs (cfg.proxy.httpsProxy != null) {
+          https_proxy = cfg.proxy.httpsProxy;
+        } // optionalAttrs (cfg.proxy.rsyncProxy != null) {
+          rsync_proxy = cfg.proxy.rsyncProxy;
+        } // optionalAttrs (cfg.proxy.ftpProxy != null) {
+          ftp_proxy   = cfg.proxy.ftpProxy;
+        } // optionalAttrs (cfg.proxy.allProxy != null) {
+          all_proxy   = cfg.proxy.allProxy;
+        } // optionalAttrs (cfg.proxy.noProxy != null) {
+          no_proxy    = cfg.proxy.noProxy;
+        };
+
+    # Install the proxy environment variables
+    environment.sessionVariables = cfg.proxy.envVars;
+
+  };
+
+}