From 22a47ab03c8a1bf81df3aa0d29a4d6a29aacc36f Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Fri, 11 Apr 2014 12:50:46 +0200
Subject: [PATCH] Fix building against Nix 1.7

---
 default.nix | 7 ++++---
 nix-repl.cc | 4 ++--
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/default.nix b/default.nix
index c4a967bf5..435c16c09 100644
--- a/default.nix
+++ b/default.nix
@@ -3,11 +3,12 @@
 with import nixpkgs { inherit system; };
 
 runCommand "nix-repl"
-  { buildInputs = [ readline nixUnstable boehmgc ]; }
+  { buildInputs = [ readline nix boehmgc ]; }
   ''
     mkdir -p $out/bin
     g++ -O3 -Wall -std=c++0x \
       -o $out/bin/nix-repl ${./nix-repl.cc} \
-      -I${nixUnstable}/include/nix -L${nixUnstable}/lib/nix \
-      -lformat -lutil -lstore -lexpr -lmain -lreadline -lgc
+      -I${nix}/include/nix \
+      -lnixformat -lnixutil -lnixstore -lnixexpr -lnixmain -lreadline -lgc \
+      -DNIX_VERSION=${(builtins.parseDrvName nix.name).version}
   ''
diff --git a/nix-repl.cc b/nix-repl.cc
index 1c7b2f514..ef9be417a 100644
--- a/nix-repl.cc
+++ b/nix-repl.cc
@@ -323,7 +323,7 @@ bool NixRepl::processLine(string line)
                but doing it in a child makes it easier to recover from
                problems / SIGINT. */
             if (runProgram("nix-store", Strings{"-r", drvPath}) == 0) {
-                Derivation drv = parseDerivation(readFile(drvPath));
+                Derivation drv = readDerivation(drvPath);
                 std::cout << std::endl << "this derivation produced the following outputs:" << std::endl;
                 foreach (DerivationOutputs::iterator, i, drv.outputs)
                     std::cout << format("  %1% -> %2%") % i->first % i->second.path << std::endl;
@@ -494,7 +494,7 @@ std::ostream & NixRepl::printValue(std::ostream & str, Value & v, unsigned int m
             str << "«derivation ";
             Bindings::iterator i = v.attrs->find(state.sDrvPath);
             PathSet context;
-            Path drvPath = i != v.attrs->end() ? state.coerceToPath(*i->value, context) : "???";
+            Path drvPath = i != v.attrs->end() ? state.coerceToPath(*i->pos, *i->value, context) : "???";
             str << drvPath << "»";
         }