Refactor settings processing

Put all Nix configuration flags in a Settings object.

src/libstore/local-store.hh

@@ -75,7 +75,7 @@ struct SQLiteStmt
     void bind64(long long value);
     void bind();
 };
-    
+
 
 class LocalStore : public StoreAPI
 {
@@ -84,7 +84,7 @@ private:
     RunningSubstituters runningSubstituters;
 
     Path linksDir;
-    
+
 public:
 
     /* Initialise the local store, upgrading the schema if
@@ -92,15 +92,15 @@ public:
     LocalStore(bool reserveSpace = true);
 
     ~LocalStore();
-    
+
     /* Implementations of abstract store API methods. */
-    
+
     bool isValidPath(const Path & path);
 
     PathSet queryValidPaths(const PathSet & paths);
-    
+
     PathSet queryAllValidPaths();
-    
+
     ValidPathInfo queryPathInfo(const Path & path);
 
     Hash queryPathHash(const Path & path);
@@ -120,17 +120,17 @@ public:
     PathSet queryDerivationOutputs(const Path & path);
 
     StringSet queryDerivationOutputNames(const Path & path);
-    
+
     Path queryPathFromHashPart(const string & hashPart);
-    
+
     PathSet querySubstitutablePaths(const PathSet & paths);
 
     void querySubstitutablePathInfos(const Path & substituter,
         PathSet & paths, SubstitutablePathInfos & infos);
-    
+
     void querySubstitutablePathInfos(const PathSet & paths,
         SubstitutablePathInfos & infos);
-    
+
     Path addToStore(const Path & srcPath,
         bool recursive = true, HashType hashAlgo = htSHA256,
         PathFilter & filter = defaultPathFilter);
@@ -149,7 +149,7 @@ public:
         Sink & sink);
 
     Paths importPaths(bool requireSignature, Source & source);
-    
+
     void buildPaths(const PathSet & paths);
 
     void ensurePath(const Path & path);
@@ -157,7 +157,7 @@ public:
     void addTempRoot(const Path & path);
 
     void addIndirectRoot(const Path & path);
-    
+
     void syncWithGC();
 
     Roots findRoots();
@@ -170,7 +170,7 @@ public:
 
     /* Optimise a single store path. */
     void optimisePath(const Path & path);
-    
+
     /* Check the integrity of the Nix store. */
     void verifyStore(bool checkContents);
 
@@ -229,18 +229,18 @@ private:
     unsigned long long queryValidPathId(const Path & path);
 
     unsigned long long addValidPath(const ValidPathInfo & info, bool checkOutputs = true);
-        
+
     void addReference(unsigned long long referrer, unsigned long long reference);
-    
+
     void appendReferrer(const Path & from, const Path & to, bool lock);
-    
+
     void rewriteReferrers(const Path & path, bool purge, PathSet referrers);
 
     void invalidatePath(const Path & path);
 
     /* Delete a path from the Nix store. */
     void invalidatePathChecked(const Path & path);
-    
+
     void verifyPath(const Path & path, const PathSet & store,
         PathSet & done, PathSet & validPaths);
 
@@ -253,14 +253,14 @@ private:
     struct GCState;
 
     void deleteGarbage(GCState & state, const Path & path);
-    
+
     bool tryToDelete(GCState & state, const Path & path);
-    
+
     bool isActiveTempFile(const GCState & state,
         const Path & path, const string & suffix);
-        
+
     int openGCLock(LockType lockType);
-    
+
     void removeUnusedLinks();
 
     void startSubstituter(const Path & substituter,
@@ -269,7 +269,7 @@ private:
     Path createTempDirInStore();
 
     Path importPath(bool requireSignature, Source & source);
-    
+
     void checkDerivationOutputs(const Path & drvPath, const Derivation & drv);
 
     void optimisePath_(OptimiseStats & stats, const Path & path);
@@ -290,9 +290,6 @@ void canonicalisePathMetaData(const Path & path, bool recurse);
 
 MakeError(PathInUse, Error);
 
-/* Whether we are in build users mode. */
-bool haveBuildUsers();
-
 /* Whether we are root. */
 bool amPrivileged();
 
@@ -305,5 +302,5 @@ void deletePathWrapped(const Path & path,
     unsigned long long & bytesFreed, unsigned long long & blocksFreed);
 
 void deletePathWrapped(const Path & path);
- 
+
 }