proc hashNonProc(s: PSym): SigHash {....raises: [ValueError, OSError, KeyError,
    IOError, Exception], tags: [RootEffect, WriteIOEffect, ReadEnvEffect,
                                ReadIOEffect, ReadDirEffect], forbids: [].}

proc hashOwner(s: PSym): SigHash {....raises: [ValueError, OSError, KeyError,
    IOError, Exception], tags: [RootEffect, WriteIOEffect, ReadEnvEffect,
                                ReadIOEffect, ReadDirEffect], forbids: [].}

proc hashType(t: PType; conf: ConfigRef; flags: set[ConsiderFlag] = {CoType}): SigHash {....raises: [
    ValueError, OSError, KeyError, IOError, Exception, ERecoverableError], tags: [
    RootEffect, WriteIOEffect, ReadEnvEffect, ReadIOEffect, ReadDirEffect],
    forbids: [].}

proc idOrSig(s: PSym; currentModule: string;
             sigCollisions: var CountTable[SigHash]; conf: ConfigRef): Rope {....raises: [
    ValueError, OSError, KeyError, IOError, Exception, ERecoverableError], tags: [
    RootEffect, WriteIOEffect, ReadEnvEffect, ReadIOEffect, ReadDirEffect],
    forbids: [].}

proc sigHash(s: PSym; conf: ConfigRef): SigHash {....raises: [ValueError, OSError,
    KeyError, IOError, Exception, ERecoverableError], tags: [RootEffect,
    WriteIOEffect, ReadEnvEffect, ReadIOEffect, ReadDirEffect], forbids: [].}

proc symBodyDigest(graph: ModuleGraph; sym: PSym): SigHash {....raises: [
    ValueError, OSError, KeyError, IOError, Exception, ERecoverableError], tags: [
    RootEffect, WriteIOEffect, ReadEnvEffect, ReadIOEffect, ReadDirEffect],
    forbids: [].}