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authorEelco Dolstra <e.dolstra@tudelft.nl>2009-02-27T11·04+0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2009-02-27T11·04+0000
commit60cb7de336035768089cc764a3fd7e8867a8d298 (patch)
tree710ab85ccd7aa37f2df21ea5b37011273719273c /src/libstore/globals.cc
parent8ab6bc5a49686aedf85adffe322c4f016764af5f (diff)
* Allow options from the Nix config file to be overriden from the
  command line (e.g. "--option build-use-chroot true").

Diffstat (limited to 'src/libstore/globals.cc')
-rw-r--r--src/libstore/globals.cc12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/libstore/globals.cc b/src/libstore/globals.cc
index 296cc4ac8029..907627b6591c 100644
--- a/src/libstore/globals.cc
+++ b/src/libstore/globals.cc
@@ -34,6 +34,9 @@ static bool settingsRead = false;
 
 static std::map<string, Strings> settings;
 
+/* Overriden settings. */
+std::map<string, Strings> settingsCmdline;
+
 
 string & at(Strings & ss, unsigned int n)
 {
@@ -73,6 +76,8 @@ static void readSettings()
         advance(i, 2);
         settings[name] = Strings(i, tokens.end());
     };
+
+    settings.insert(settingsCmdline.begin(), settingsCmdline.end());
     
     settingsRead = true;
 }
@@ -118,6 +123,13 @@ unsigned int queryIntSetting(const string & name, unsigned int def)
 }
 
 
+void overrideSetting(const string & name, const Strings & value)
+{
+    if (settingsRead) settings[name] = value;
+    settingsCmdline[name] = value;
+}
+
+
 void reloadSettings()
 {
     settingsRead = false;