pipes-parse and pipes-attoparsec

I'm putting this pull request here in case you want to try it yourself until I try again, since currently it doesn't build for me using `cabal-meta`, so I'm not certain my changes are OK. However, `tonyday567/pipes-ecosystem/master` also doesn't build in my computer.

`cabal-meta --dev install` fails with:

```
Installing packages:
/mnt/var0/home/debian/k/q/pipes-ecosystem.git/
vendor/pipes-vector
vendor/pipes-network
vendor/Haskell-Pipes-Concurrency-Library
vendor/Haskell-Pipes-Safe-Library
vendor/Haskell-Pipes-Library
cabal-dev install /mnt/var0/home/debian/k/q/pipes-ecosystem.git/ vendor/pipes-vector vendor/pipes-network vendor/Haskell-Pipes-Concurrency-Library vendor/Haskell-Pipes-Safe-Library vendor/Haskell-Pipes-Library
Warning: vendor/Haskell-Pipes-Concurrency-Library/pipes-concurrency.cabal: The
field "hs-source-dir" is deprecated, please use "hs-source-dirs"
Resolving dependencies...
cabal: Could not resolve dependencies:
trying: pipes-4.0.0
cabal-meta: 
log of commands saved to: /mnt/var0/home/debian/k/q/pipes-ecosystem.git/.shelly/10.txt
Exception: error running: cabal-dev install /mnt/var0/home/debian/k/q/pipes-ecosystem.git/ vendor/pipes-vector vendor/pipes-network vendor/Haskell-Pipes-Concurrency-Library vendor/Haskell-Pipes-Safe-Library vendor/Haskell-Pipes-Library
exit status: 1
stderr: Warning: vendor/Haskell-Pipes-Concurrency-Library/pipes-concurrency.cabal: The
field "hs-source-dir" is deprecated, please use "hs-source-dirs"
cabal: Could not resolve dependencies:
trying: pipes-4.0.0
```