nano: support system-wide nanorc

This patch does two things
1. builds nano with sysconfdir=/etc; and
2. adds an option programs.nano.nanorc

2 files changed, 36 insertions, 0 deletions

diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 2cbda50ba29d..2e0230f2b5e5 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -52,6 +52,7 @@
   ./programs/blcr.nix
   ./programs/environment.nix
   ./programs/info.nix
+  ./programs/nano.nix
   ./programs/screen.nix
   ./programs/shadow.nix
   ./programs/shell.nix
diff --git a/nixos/modules/programs/nano.nix b/nixos/modules/programs/nano.nix
new file mode 100644
index 000000000000..b8803eec7be1
--- /dev/null
+++ b/nixos/modules/programs/nano.nix
@@ -0,0 +1,35 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.programs.nano;
+in
+
+{
+  ###### interface
+
+  options = {
+    programs.nano = {
+
+      nanorc = lib.mkOption {
+        type = lib.types.lines;
+        default = "";
+        description = ''
+          The system-wide nano configuration.
+          See <citerefentry><refentrytitle>nanorc</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+        '';
+        example = ''
+          set nowrap
+          set tabstospaces
+          set tabsize 4
+        '';
+      };
+    };
+  };
+
+  ###### implementation
+
+  config = lib.mkIf (cfg.nanorc != "") {
+    environment.etc."nanorc".text = cfg.nanorc;
+  };
+
+}