From 28f8ca560f7c026813f2fd5e0606ca0c6139e7b8 Mon Sep 17 00:00:00 2001
From: Profpatsch <mail@profpatsch.de>
Date: Thu, 19 May 2016 10:41:10 +0200
Subject: [PATCH] debian-build: fix checkinstall invocation (#15538)

Checkinstall had two problems:
1. when it was called without a version (e.g. with a derivation created
by fetchFromGitHub) it would use `src` as debian version, which caused
dpkg to fail
2. when dpkg failed, it would invoke the pager with the log, which hangs
the build

So now
1. the default version is the dummy `0.0.0`
2. the used pager is `cat`
---
 pkgs/build-support/release/debian-build.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pkgs/build-support/release/debian-build.nix b/pkgs/build-support/release/debian-build.nix
index 7dcc9b9552a4..f4bc3e73056d 100644
--- a/pkgs/build-support/release/debian-build.nix
+++ b/pkgs/build-support/release/debian-build.nix
@@ -54,11 +54,15 @@ vmTools.runInLinuxImage (stdenv.mkDerivation (
       eval "$preInstall"
       export LOGNAME=root
 
+      # otherwise build hangs when it wants to display
+      # the log file
+      export PAGER=cat
       ${checkinstall}/sbin/checkinstall --nodoc -y -D \
         --fstrans=${if fsTranslation then "yes" else "no"} \
         --requires="${concatStringsSep "," debRequires}" \
         --provides="${concatStringsSep "," debProvides}" \
-        ${optionalString (src ? version) "--pkgversion=$(echo ${src.version} | tr _ -)"} \
+        ${if (src ? version) then "--pkgversion=$(echo ${src.version} | tr _ -)"
+                             else "--pkgversion=0.0.0"} \
         ''${debMaintainer:+--maintainer="'$debMaintainer'"} \
         ''${debName:+--pkgname="'$debName'"} \
         $checkInstallFlags \