From ab7e0c879cc0657ea7e25eb95ab89473f38c5507 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Tue, 19 Sep 2017 20:51:07 +0200
Subject: withGetopt: sort getopt arguments

---
 krebs/5pkgs/simple/withGetopt.nix | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'krebs/5pkgs/simple/withGetopt.nix')

diff --git a/krebs/5pkgs/simple/withGetopt.nix b/krebs/5pkgs/simple/withGetopt.nix
index b7bd4012..7a19ccd2 100644
--- a/krebs/5pkgs/simple/withGetopt.nix
+++ b/krebs/5pkgs/simple/withGetopt.nix
@@ -38,18 +38,31 @@ in writeDash wrapper-name ''
 
   wrapper_name=${shell.escape wrapper-name}
 
+  # TODO
+  for i in "$@"; do
+    case $i in
+      -h|--help)
+        ${concatStringsSep "\n" (mapAttrsToList (name: opt: /* sh */ ''
+          printf '  %-16s  %s\n' \
+              --${shell.escape opt.long} \
+              ${shell.escape (opt.description or "undocumented flag")}
+        '') opts)}
+        exit
+    esac
+  done
+
   ${concatStringsSep "\n" (mapAttrsToList (name: opt: /* sh */ ''
     unset ${opt.varname}
   '') opts)}
 
   args=$(${utillinux}/bin/getopt \
-      -n "$wrapper_name" \
-      -o "" \
       -l ${shell.escape
             (concatMapStringsSep ","
               (opt: opt.long + optionalString (!opt.switch) ":")
               (filter (opt: opt.long != null)
                       (attrValues opts)))} \
+      -n "$wrapper_name" \
+      -o "" \
       -s sh \
       -- "$@")
   if \test $? != 0; then exit 1; fi
-- 
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