Add --jobs and --cpus to bild

By default, nix will use the maximum amount of cores available to the machine.
On my machine it was maxxing out the CPUs and then actually running out of RAM
when compiling JavaScriptCore and literally shutting down my machine. So, I need
to be able to control the concurrency and parallelism.

The default settings I chose should reserve 4 cores for the user.

I also changed --json to --plan because -j makes more sense for --jobs, as its
used this way in other tools like make and nix-build.

1 files changed, 5 insertions, 2 deletions

diff --git a/Alpha.hs b/Alpha.hs
index e53474b..ba35e5b 100644
--- a/Alpha.hs
+++ b/Alpha.hs
@@ -83,7 +83,7 @@ import qualified Data.List as List
 import Data.String
 import qualified Data.Text as Text
 import qualified Data.Text.Lazy as LazyText
-import Protolude as X hiding (list, ($), (&), (.), (>>=))
+import Protolude as X hiding (list, toS, ($), (&), (.), (>>=))
 import Protolude.Conv
 import qualified Prelude
 
@@ -248,7 +248,10 @@ wrap lim = Text.words .> wrap_ 0 .> Text.unwords
 -- | Automatically convert any string-like type into any other string-like type,
 -- using types to infer the appropriate conversion.
 str :: (StringConv a b) => a -> b
-str = Protolude.Conv.toS
+str = toS
+
+instance StringConv Int String where
+  strConv _ = show
 
 tshow :: Show a => a -> Text
 tshow = show