From 276a40b31f631c188d6dcbdf603a738e1380ff74 Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Wed, 16 Jul 2014 16:02:05 +0200 Subject: Handle case collisions on case-insensitive systems When running NixOps under Mac OS X, we need to be able to import store paths built on Linux into the local Nix store. However, HFS+ is usually case-insensitive, so if there are directories with file names that differ only in case, then importing will fail. The solution is to add a suffix ("~nix~case~hack~") to colliding files. For instance, if we have a directory containing xt_CONNMARK.h and xt_connmark.h, then the latter will be renamed to "xt_connmark.h~nix~case~hack~1". If a store path is dumped as a NAR, the suffixes are removed. Thus, importing and exporting via a case-insensitive Nix store is round-tripping. So when NixOps calls nix-copy-closure to copy the path to a Linux machine, you get the original file names back. Closes #119. --- src/libstore/globals.cc | 2 ++ 1 file changed, 2 insertions(+) (limited to 'src/libstore/globals.cc') diff --git a/src/libstore/globals.cc b/src/libstore/globals.cc index b9d028be9654..60bc1dba13ff 100644 --- a/src/libstore/globals.cc +++ b/src/libstore/globals.cc @@ -2,6 +2,7 @@ #include "globals.hh" #include "util.hh" +#include "archive.hh" #include #include @@ -150,6 +151,7 @@ void Settings::update() get(useSshSubstituter, "use-ssh-substituter"); get(logServers, "log-servers"); get(enableImportNative, "allow-unsafe-native-code-during-evaluation"); + get(useCaseHack, "use-case-hack"); string subs = getEnv("NIX_SUBSTITUTERS", "default"); if (subs == "default") { -- cgit 1.4.1