How to use PostgreSQL with Haskell: hasql

• hasql-transaction

  1 12 6.0 Haskell

  A composable abstraction over retriable transactions for Hasql

Hasql is an ecosystem of libraries. To keep it simple, let’s limit ourselves to core hasql, hasql-transaction, and hasql-th. We’re using hasql 1.6.3.2 published in 2023.

• profunctors

  4 69 4.3 Haskell

  Haskell 98 Profunctors

We’ll also use contravariant-extras, vector, profunctors, and tuple packages to make a few things tidier (this isn’t required; it’s all copy-paste anyway).

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• hasql-pool

  1 15 8.2 Haskell

  A pool of connections for Hasql

In reality/production, we should probably use hasql-pool to work with a pool of connections.

• contravariant-extras

  1 3 5.5 Haskell

  Extras for the "contravariant" package

We’ll also use contravariant-extras, vector, profunctors, and tuple packages to make a few things tidier (this isn’t required; it’s all copy-paste anyway).

• hasql-th

  4 110 5.2 Haskell

  Template Haskell utilities for Hasql

Hasql is an ecosystem of libraries. To keep it simple, let’s limit ourselves to core hasql, hasql-transaction, and hasql-th. We’re using hasql 1.6.3.2 published in 2023.

• elephants

  4 23 4.6 Haskell

💡 Remember that you can see the complete code in the repo.

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