qtility

A monorepo containing utility libraries for application development. The repository is built on some basic ideas that follow throughout:

• MonadReader is a good basis for most applications as well as a good way to make dependencies for functions work across many different contexts.
• MTL-style in general is how we make code easier to reuse.
• If we have lenses/prisms in mind for the code we write, we'll have an easier time using library functionality.
• Using try, mapException, fromEither, fromEitherM, etc. makes it so that we don't have to worry so much about exactly which error interface we're using, but can decide more flexibly at the call-site what to do.

qtility

This is a standard library/prelude version of several qtility libraries as well as common exports. This includes:

• RIO
• Common parts of Data.Aeson (including lenses for AesonOptions)
• Re-works of fromX functions that take Maybe/Either and throw from them
• TemplateHaskell helpers
• Utilities for dealing with environment variables/.env files

Other, more specific libraries

• qaws: Utilities for common general AWS tasks via amazonka
• qaws-sqs: Utilities for common usage of AWS Simple Queue Service (SQS).
• qaws-s3: Utilities for common usage of AWS Simple Storage Service (S3).
• qaws-sns: Utilities for common usage of AWS Simple Notification Service (SNS).
• qaws-dynamodb: Utilities for common usage of AWS DynamoDB.
• qaws-cloudwatch-logs: Utilities for common usage of AWS CloudWatch Logs.
• qaws-secretsmanager: Utilities for common usage of AWS Secrets Manager.
• qtility-db: Utilities for database interaction via postgresql-simple
• qtility-brick: Utilities for writing brick applications.
• qtility-code: Utilities for executing/interpreting Haskell code.
• qtility-metrics: Utilities for collecting/sending metrics via Prometheus & EKG.
• mortred: Utilities for web scraping/frontend testing via hs-webdriver & Selenium.

Depending on this repo

If you want to use this repository and its packages, add the following to your stack.yaml:

extra-deps:
- github: quanterall/qtility
  commit: aac174d0d953a5bd04dc75c80977dc5b0e0939bf
  subdirs:
  - qtility
  - qtility-db
  - qtility-brick
  - qaws
  - qaws-s3

Note that you probably want the latest commit.