proc declarePureEnumField(c: PContext; s: PSym) {....raises: [KeyError, Exception],
    tags: [ReadDirEffect, RootEffect].}

proc evalFrom(c: PContext; n: PNode): PNode {....raises: [Exception, ValueError,
    KeyError, OSError, IOError, ERecoverableError], tags: [RootEffect,
    ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}

proc evalImport(c: PContext; n: PNode): PNode {....raises: [KeyError, Exception,
    ValueError, OSError, IOError, ERecoverableError], tags: [RootEffect,
    ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}

proc evalImportExcept(c: PContext; n: PNode): PNode {....raises: [Exception,
    ValueError, KeyError, OSError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}

proc importAllSymbols(c: PContext; fromMod: PSym) {....raises: [KeyError,
    Exception, ValueError, OSError, IOError, ERecoverableError], tags: [
    ReadDirEffect, RootEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}

proc readExceptSet(c: PContext; n: PNode): IntSet {....raises: [Exception,
    KeyError, ValueError, OSError, IOError, ERecoverableError], tags: [
    RootEffect, ReadDirEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}