Distribution.Types.ParStrat

Documentation

data ParStratX sem

How to control parallelism, e.g. a fixed number of jobs or by using a system semaphore.

Constructors

NumJobs (Maybe Int)

Compile in parallel with the given number of jobs (`-jN` or `-j`).

UseSem sem

`--semaphore`: use a system semaphore to control parallelism.

Serial

No parallelism (neither `-jN` nor `--semaphore`, but could be `-j1`).

Instances

Show sem => Show (ParStratX sem)

Defined in Distribution.Types.ParStrat

Methods

showsPrec :: Int -> ParStratX sem -> ShowS

show :: ParStratX sem -> String

showList :: [ParStratX sem] -> ShowS

type ParStrat = ParStratX String

Used by Cabal to indicate that we want to use this specific semaphore (created by cabal-install)

type ParStratInstall = ParStratX Int

Used by cabal-install to say we want to create a semaphore with N slots.

isParallelBuild :: ParStratX n -> Bool

Determine if the parallelism strategy enables parallel builds.