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tvl-depot/users/Profpatsch/my-prelude
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Profpatsch 5c709131de fix(users/Profpatsch/whatcd-resolver): show query error as html 
We want the user thingy to see which error happened; it also gets
logged in the traces as before.

There’s another function which we should replace as well at one point.

Change-Id: I3d49edccd0e2088a45ac0138af9536b40dfa6848
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11660
Tested-by: BuildkiteCI
Autosubmit: Profpatsch <mail@profpatsch.de>
Reviewed-by: Profpatsch <mail@profpatsch.de>
2024-06-03 14:55:13 +00:00
..
src fix(users/Profpatsch/whatcd-resolver): show query error as html 2024-06-03 14:55:13 +00:00
default.nix feat(users/Profpatsch/MyPrelude): add Arg 2024-05-13 16:09:24 +00:00
my-prelude.cabal feat(users/Profpatsch/MyPrelude): add Arg 2024-05-13 16:09:24 +00:00
README.md feat(users/Profpatsch/my-prelude): add RunCommand.hs 2023-04-22 17:17:03 +00:00

README.md

My Haskell Prelude

Contains various modules I’ve found useful when writing Haskell.

Contents

A short overview:

MyPrelude.hs

A collection of re-exports and extra functions. This does not replace the Prelude module from base, but rather should be imported in addition to Prelude.

Stuff like bad functions from prelude (partial stuff, or plain horrible stuff) are handled by a custom .hlint file, which you can find in ../.hlint.yaml.

The common style of haskell they try to enable is what I call “left-to-right Haskell”, where one mostly prefers forward-chaining operators like &/<&>/>>= to backwards operators like $/<$>/<=<. In addition, all transformation function should follow the scheme of aToB instead of B.fromA, e.g. Text.unpack/Text.pack -> textToString/stringToText. Includes a bunch of text conversion functions one needs all the time, in the same style.

These have been battle-tested in a production codebase of ~30k lines of Haskell.

Label.hs

A very useful collection of anonymous labbeled tuples and enums of size 2 and 3. Assumes GHC >9.2 for RecordDotSyntax support.

Pretty.hs

Colorful multiline pretty-printing of Haskell values.

Test.hs

A wrapper around hspec which produces colorful test diffs.

Aeson.hs

Helpers around Json parsing.

Data.Error.Tree

Collect errors (from Data.Error) into a tree, then display them in a nested fashion. Super useful for e.g. collecting and displaying nested parsing errors.

RunCommand.hs

A module wrapping the process API with some helpful defaults for executing commands and printing what is executed to stderr.