| let | |
| pkgs = import <nixpkgs> {}; | |
| lib = pkgs.lib; | |
| allOptions = (import <nixpkgs/nixos> {}).options; | |
| # ** some helpers | |
| # Like mapAttrs, but if `null` is returned from the mapping function, | |
| # the element is removed from the attrset. | |
| # |
This is the final report for the GSoC 2021 project - Gradually Typed Hasktorch. Gradually Typed Hasktorch is a new tensor API for Hasktorch. It has been initiated by my mentor, Torsten Scholak, and as part of GSoC I helped with streamlining this new API.
Student: Julius Marozas Mentor: Torsten Scholak
Nix generally assumes run-time dependencies is a subset of the build-time dependencies.
This means many Nix builder functions try to automatically scan the output for runtime dependencies and "rewrite" them for runtime usage.
However shell scripts which are often exported by packages do not get this automatic scanning treatment.
This means you have to use the makeWrapper package and use either the makeWrapper or wrapProgram utility functions.
error: key "CEB167EFB5722BD6" could not be looked up remotely error: required key missing from keyring error: failed to commit transaction (unexpected error)
$ sudo pacman-key --lsign-key CEB167EFB5722BD6
if this gives error ERROR: CEB167EFB5722BD6 could not be locally signed.
$ sudo pacman-key --refresh-keys
| // using ES6 Proxy to let Promises/Observables pretend like they're regular values. | |
| // get the mapping function used for async objects | |
| let getMapper = (target) => target instanceof Promise ? 'then' : | |
| target instanceof Observable ? 'switchMap' : null; | |
| // ^ fails if the Observable is in a local namespace e.g. Rx.Observable | |
| // bind a value to its object if it's a function | |
| let bindFn = (val, obj) => typeof val == 'function' ? val.bind(obj) : val; |
