116 lines
2.6 KiB
Markdown
116 lines
2.6 KiB
Markdown
# Idris packages
|
|
|
|
## Installing Idris
|
|
|
|
The easiest way to get a working idris version is to install the `idris` attribute:
|
|
|
|
```
|
|
$ # On NixOS
|
|
$ nix-env -i nixos.idris
|
|
$ # On non-NixOS
|
|
$ nix-env -i nixpkgs.idris
|
|
```
|
|
|
|
This however only provides the `prelude` and `base` libraries. To install additional libraries:
|
|
|
|
```
|
|
$ nix-env -iE 'pkgs: pkgs.idrisPackages.with-packages (with pkgs.idrisPackages; [ contrib pruviloj ])'
|
|
```
|
|
|
|
To see all available Idris packages:
|
|
```
|
|
$ # On NixOS
|
|
$ nix-env -qaPA nixos.idrisPackages
|
|
$ # On non-NixOS
|
|
$ nix-env -qaPA nixpkgs.idrisPackages
|
|
```
|
|
|
|
Similarly, entering a `nix-shell`:
|
|
```
|
|
$ nix-shell -p 'idrisPackages.with-packages (with idrisPackages; [ contrib pruviloj ])'
|
|
```
|
|
|
|
## Starting Idris with library support
|
|
|
|
To have access to these libraries in idris, call it with an argument `-p <library name>` for each library:
|
|
|
|
```
|
|
$ nix-shell -p 'idrisPackages.with-packages (with idrisPackages; [ contrib pruviloj ])'
|
|
[nix-shell:~]$ idris -p contrib -p pruviloj
|
|
```
|
|
|
|
A listing of all available packages the Idris binary has access to is available via `--listlibs`:
|
|
|
|
```
|
|
$ idris --listlibs
|
|
00prelude-idx.ibc
|
|
pruviloj
|
|
base
|
|
contrib
|
|
prelude
|
|
00pruviloj-idx.ibc
|
|
00base-idx.ibc
|
|
00contrib-idx.ibc
|
|
```
|
|
|
|
## Building an Idris project with Nix
|
|
|
|
As an example of how a Nix expression for an Idris package can be created, here is the one for `idrisPackages.yaml`:
|
|
|
|
```nix
|
|
{ build-idris-package
|
|
, fetchFromGitHub
|
|
, contrib
|
|
, lightyear
|
|
, lib
|
|
}:
|
|
build-idris-package {
|
|
name = "yaml";
|
|
version = "2018-01-25";
|
|
|
|
# This is the .ipkg file that should be built, defaults to the package name
|
|
# In this case it should build `Yaml.ipkg` instead of `yaml.ipkg`
|
|
# This is only necessary because the yaml packages ipkg file is
|
|
# different from its package name here.
|
|
ipkgName = "Yaml";
|
|
# Idris dependencies to provide for the build
|
|
idrisDeps = [ contrib lightyear ];
|
|
|
|
src = fetchFromGitHub {
|
|
owner = "Heather";
|
|
repo = "Idris.Yaml";
|
|
rev = "5afa51ffc839844862b8316faba3bafa15656db4";
|
|
sha256 = "1g4pi0swmg214kndj85hj50ccmckni7piprsxfdzdfhg87s0avw7";
|
|
};
|
|
|
|
meta = {
|
|
description = "Idris YAML lib";
|
|
homepage = https://github.com/Heather/Idris.Yaml;
|
|
license = lib.licenses.mit;
|
|
maintainers = [ lib.maintainers.brainrape ];
|
|
};
|
|
}
|
|
```
|
|
|
|
Assuming this file is saved as `yaml.nix`, it's buildable using
|
|
|
|
```
|
|
$ nix-build -E '(import <nixpkgs> {}).idrisPackages.callPackage ./yaml.nix {}'
|
|
```
|
|
|
|
Or it's possible to use
|
|
|
|
```nix
|
|
with import <nixpkgs> {};
|
|
|
|
{
|
|
yaml = idrisPackages.callPackage ./yaml.nix {};
|
|
}
|
|
```
|
|
|
|
in another file (say `default.nix`) to be able to build it with
|
|
|
|
```
|
|
$ nix-build -A yaml
|
|
```
|