From 9a99dc736d814f41d2b3ceb92da2435ae2dd5632 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Tue, 8 Jul 2003 20:26:22 +0000
Subject: [PATCH] * Canonicalise paths so that Fix produces identical Nix  
 expressions for identical inputs.

---
 src/fix.cc    | 3 ++-
 src/fstate.cc | 2 +-
 src/store.cc  | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/fix.cc b/src/fix.cc
index 508a44116..b4626f71f 100644
--- a/src/fix.cc
+++ b/src/fix.cc
@@ -170,7 +170,8 @@ static Expr evalExpr(Expr e)
         if (name == "")
             throw badTerm("no package name specified", nf);
         
-        string out = nixStore + "/" + ((string) hash).c_str() + "-" + name;
+        string out = 
+            canonPath(nixStore + "/" + ((string) hash).c_str() + "-" + name);
 
         env = ATinsert(env, ATmake("(<str>, <str>)", "out", out.c_str()));
 
diff --git a/src/fstate.cc b/src/fstate.cc
index 731493fd3..344197748 100644
--- a/src/fstate.cc
+++ b/src/fstate.cc
@@ -163,7 +163,7 @@ Hash writeTerm(ATerm t)
     if (!ATwriteToNamedTextFile(t, path.c_str()))
         throw Error(format("cannot write aterm %1%") % path);
     Hash hash = hashPath(path);
-    string path2 = nixStore + "/" + (string) hash + ".nix";
+    string path2 = canonPath(nixStore + "/" + (string) hash + ".nix");
     if (rename(path.c_str(), path2.c_str()) == -1)
         throw SysError(format("renaming %1% to %2%") % path % path2);
     registerPath(path2, hash);
diff --git a/src/store.cc b/src/store.cc
index bb945e037..095d20430 100644
--- a/src/store.cc
+++ b/src/store.cc
@@ -177,7 +177,7 @@ void addToStore(string srcPath, string & dstPath, Hash & hash)
     }
     
     string baseName = baseNameOf(srcPath);
-    dstPath = nixStore + "/" + (string) hash + "-" + baseName;
+    dstPath = canonPath(nixStore + "/" + (string) hash + "-" + baseName);
 
     copyPath(srcPath, dstPath);