From 4b8ffc1bfd494de1fafde2527a337ad5eb31a27c Mon Sep 17 00:00:00 2001
From: tv <tv@shackspace.de>
Date: Thu, 22 Oct 2015 00:23:02 +0200
Subject: [PATCH] krebs.nixos-install: fail if pkg cannot be found

Collaterally, search in /nix instead of /mnt/nix
---
 krebs/default.nix | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/krebs/default.nix b/krebs/default.nix
index 08de72294..40d245f98 100644
--- a/krebs/default.nix
+++ b/krebs/default.nix
@@ -132,16 +132,20 @@ let out = {
           s:.*\(/nix/store/[a-z0-9]*-nix-[0-9.]\+/bin/nix-env\).*:\1:p;T;q
         ')
         echo "nix-env is $nix_env" >&2
-        getchrootpath() {(
+        findpkg() {(
           name=$1
-          path=$(find /mnt/nix/store \
+          path=$(find /nix/store \
               -mindepth 1 -maxdepth 1 -type d -name '*-'"$name"'-*' \
             | head -n 1 | sed s:^/mnt::)
-          echo "$name is $path" >&2
-          echo "$path"
+          if echo "$path" | grep .; then
+            echo "$name is $path" >&2
+          else
+            echo "Error: package not found: $name" >&2
+            exit 1
+          fi
         )}
-        cacert=$(getchrootpath cacert)
-        coreutils=$(getchrootpath coreutils)
+        cacert=$(findpkg cacert)
+        coreutils=$(findpkg coreutils)
         env="$coreutils/bin/env \
             SSL_CERT_FILE=$cacert/etc/ssl/certs/ca-bundle.crt"
         sed -i '