#pragma once #include "types.hh" #include <map> #include <sys/types.h> namespace nix { struct Settings { typedef std::map<string, string> SettingsMap; Settings(); void processEnvironment(); void loadConfFile(); void set(const string & name, const string & value); string get(const string & name, const string & def); Strings get(const string & name, const Strings & def); bool get(const string & name, bool def); int get(const string & name, int def); void update(); string pack(); void unpack(const string & pack); SettingsMap getOverrides(); /* The directory where we store sources and derived files. */ Path nixStore; Path nixDataDir; /* !!! fix */ Path nixPrefix; /* The directory where we log various operations. */ Path nixLogDir; /* The directory where state is stored. */ Path nixStateDir; /* The directory where we keep the SQLite database. */ Path nixDBPath; /* The directory where configuration files are stored. */ Path nixConfDir; /* The directory where internal helper programs are stored. */ Path nixLibexecDir; /* The directory where the main programs are stored. */ Path nixBinDir; /* File name of the socket the daemon listens to. */ Path nixDaemonSocketFile; /* Whether to keep temporary directories of failed builds. */ bool keepFailed; /* Whether to keep building subgoals when a sibling (another subgoal of the same goal) fails. */ bool keepGoing; /* Whether, if we cannot realise the known closure corresponding to a derivation, we should try to normalise the derivation instead. */ bool tryFallback; /* Verbosity level for build output. */ Verbosity buildVerbosity; /* Maximum number of parallel build jobs. 0 means unlimited. */ unsigned int maxBuildJobs; /* Number of CPU cores to utilize in parallel within a build, i.e. by passing this number to Make via '-j'. 0 means that the number of actual CPU cores on the local host ought to be auto-detected. */ unsigned int buildCores; /* Read-only mode. Don't copy stuff to the store, don't change the database. */ bool readOnlyMode; /* The canonical system name, as returned by config.guess. */ string thisSystem; /* The maximum time in seconds that a builer can go without producing any output on stdout/stderr before it is killed. 0 means infinity. */ time_t maxSilentTime; /* The maximum duration in seconds that a builder can run. 0 means infinity. */ time_t buildTimeout; /* The substituters. There are programs that can somehow realise a store path without building, e.g., by downloading it or copying it from a CD. */ Paths substituters; /* Whether to use build hooks (for distributed builds). Sometimes users want to disable this from the command-line. */ bool useBuildHook; /* Whether buildDerivations() should print out lines on stderr in a fixed format to allow its progress to be monitored. Each line starts with a "@". The following are defined: @ build-started <drvpath> <outpath> <system> <logfile> @ build-failed <drvpath> <outpath> <exitcode> <error text> @ build-succeeded <drvpath> <outpath> @ substituter-started <outpath> <substituter> @ substituter-failed <outpath> <exitcode> <error text> @ substituter-succeeded <outpath> Best combined with --no-build-output, otherwise stderr might conceivably contain lines in this format printed by the builders. */ bool printBuildTrace; /* Amount of reserved space for the garbage collector (/nix/var/nix/db/reserved). */ off_t reservedSize; /* Whether SQLite should use fsync. */ bool fsyncMetadata; /* Whether SQLite should use WAL mode. */ bool useSQLiteWAL; /* Whether to call sync() before registering a path as valid. */ bool syncBeforeRegistering; /* Whether to use substitutes. */ bool useSubstitutes; /* The Unix group that contains the build users. */ string buildUsersGroup; /* Set of ssh connection strings for the ssh substituter */ Strings sshSubstituterHosts; /* Whether to use the ssh substituter at all */ bool useSshSubstituter; /* Whether to impersonate a Linux 2.6 machine on newer kernels. */ bool impersonateLinux26; /* Whether to store build logs. */ bool keepLog; /* Whether to compress logs. */ bool compressLog; /* Maximum number of bytes a builder can write to stdout/stderr before being killed (0 means no limit). */ unsigned long maxLogSize; /* Whether to cache build failures. */ bool cacheFailure; /* How often (in seconds) to poll for locks. */ unsigned int pollInterval; /* Whether to check if new GC roots can in fact be found by the garbage collector. */ bool checkRootReachability; /* Whether the garbage collector should keep outputs of live derivations. */ bool gcKeepOutputs; /* Whether the garbage collector should keep derivers of live paths. */ bool gcKeepDerivations; /* Whether to automatically replace files with identical contents with hard links. */ bool autoOptimiseStore; /* Whether to add derivations as a dependency of user environments (to prevent them from being GCed). */ bool envKeepDerivations; /* Whether to lock the Nix client and worker to the same CPU. */ bool lockCPU; /* Whether to show a stack trace if Nix evaluation fails. */ bool showTrace; /* A list of URL prefixes that can return Nix build logs. */ Strings logServers; /* Whether the importNative primop should be enabled */ bool enableImportNative; /* The hook to run just before a build to set derivation-specific build settings */ Path preBuildHook; private: SettingsMap settings, overrides; void _get(string & res, const string & name); void _get(bool & res, const string & name); void _get(StringSet & res, const string & name); void _get(Strings & res, const string & name); template<class N> void _get(N & res, const string & name); }; // FIXME: don't use a global variable. extern Settings settings; extern const string nixVersion; }