From 41b1b80d9ebebcf21bdd58851af464e6134da9f9 Mon Sep 17 00:00:00 2001
From: Nicolas Pierron <nicolas.b.pierron@gmail.com>
Date: Sun, 22 Feb 2009 16:07:10 +0000
Subject: [PATCH] * Quick hack to make the `info' command work properly by
 generating   a "dir" file on the fly in a wrapper script.

svn path=/nixos/branches/fix-style/; revision=14164
---
 helpers/info-wrapper.nix | 29 +++++++++++++++++++++++++++++
 system/system.nix        |  1 +
 2 files changed, 30 insertions(+)
 create mode 100644 helpers/info-wrapper.nix

diff --git a/helpers/info-wrapper.nix b/helpers/info-wrapper.nix
new file mode 100644
index 000000000000..0f482dd4c276
--- /dev/null
+++ b/helpers/info-wrapper.nix
@@ -0,0 +1,29 @@
+# Quick hack to make the `info' command work properly.  `info' needs a
+# "dir" file containing all the installed Info files, which we don't
+# have (it would be impure to have a package installation update some
+# global "dir" file).  So this wrapper script around "info" builds a
+# temporary "dir" file on the fly.  This is a bit slow (on a cold
+# cache) but not unacceptably so.
+
+{bash, texinfo, writeScriptBin}:
+
+writeScriptBin "info"
+  ''
+    #! ${bash}/bin/sh
+  
+    dir=$(mktemp --tmpdir -d "info.dir.XXXXXX")
+
+    if test -z "$dir"; then exit 1; fi
+
+    trap 'rm -rf "$dir"' EXIT
+
+    shopt -s nullglob
+
+    for i in $(IFS=:; echo $INFOPATH); do
+        for j in $i/*.info; do
+            ${texinfo}/bin/install-info --quiet $j $dir/dir
+        done
+    done
+
+    INFOPATH=$dir:$INFOPATH ${texinfo}/bin/info "$@"
+  ''
diff --git a/system/system.nix b/system/system.nix
index bfa81c5566ad..570ba91c96f9 100644
--- a/system/system.nix
+++ b/system/system.nix
@@ -153,6 +153,7 @@ rec {
         pkgs.usbutils
         pkgs.utillinux
         pkgs.wirelesstools
+        (import ../helpers/info-wrapper.nix {inherit (pkgs) bash texinfo writeScriptBin;})
       ]
       ++ pkgs.lib.optional config.services.bitlbee.enable pkgs.bitlbee
       ++ pkgs.lib.optional config.networking.defaultMailServer.directDelivery pkgs.ssmtp