We are currently only able to validate that a single field is unique in its table. However, there are use-cases in which a pair or more of attributes should be unique inside the table. In SQL this can be expressed using a constraint such as:

ALTER TABLE recipes ADD CONSTRAINT recipes_unique_name_in_group UNIQUE (group_id, name);

It would be good if we had a function similar to `val

Affected part of DeckDeckGo

• Studio (online editor)

Feature Description

In addition to being able to select the "Deck" by clicking on the related element of the breadcrumbs, it would be handy to be able to select it on clicking on the editor, on what's around the slides (see screenshot).

Use Case

Both elements and slides can be selected by clicking on the related co

fetchPypi just calls fetchurl underneath but has a slightly different calling syntax in order to construct the URL. It would be great to track these external dependencies using niv. :-)

See #347

Otherwise one might get an error like:

cachix push /nix/store/7i1kqf6x52l1fhqqdmqgggjr0zigggik-cachix-0.1.3/bin/cachix

NoInput "You need to specify store paths either as stdin or as a cli argument"

I'm wondering if it's possible with haskell.nix to generate HIE files for some component(s). These are explained here and allow you to do static analysis of Haskell code. In particular, they can be used to run weeder.

If you pass -fwrite-ide-info to GHC, it will emit these files. By defa