pyrox.dev
Merge pull request #134514 from MostAwesomeDude/chicken
CHICKEN docs and updates
authored by sternenseemann and committed by GitHub e9d8ace0 165da724
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doc/languages-frameworks/chicken.section.md
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doc/languages-frameworks/chicken.section.md
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# CHICKEN {#sec-chicken}
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[CHICKEN](https://call-cc.org/) is a
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[R⁵RS](https://schemers.org/Documents/Standards/R5RS/HTML/)-compliant Scheme
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compiler. It includes an interactive mode and a custom package format, "eggs".
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## Using Eggs
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Eggs described in nixpkgs are available inside the
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`chickenPackages.chickenEggs` attrset. Including an egg as a build input is
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done in the typical Nix fashion. For example, to include support for [SRFI
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189](https://srfi.schemers.org/srfi-189/srfi-189.html) in a derivation, one
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might write:
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```nix
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buildInputs = [
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chicken
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chickenPackages.chickenEggs.srfi-189
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];
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```
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Both `chicken` and its eggs have a setup hook which configures the environment
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variables `CHICKEN_INCLUDE_PATH` and `CHICKEN_REPOSITORY_PATH`.
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## Updating Eggs
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nixpkgs only knows about a subset of all published eggs. It uses
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[egg2nix](https://github.com/the-kenny/egg2nix) to generate a
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package set from a list of eggs to include.
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The package set is regenerated by running the following shell commands:
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```
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$ nix-shell -p chickenPackages.egg2nix
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$ cd pkgs/development/compilers/chicken/5/
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$ egg2nix eggs.scm > eggs.nix
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```
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## Adding Eggs
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When we run `egg2nix`, we obtain one collection of eggs with
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mutually-compatible versions. This means that when we add new eggs, we may
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need to update existing eggs. To keep those separate, follow the procedure for
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updating eggs before including more eggs.
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To include more eggs, edit `pkgs/development/compilers/chicken/5/eggs.scm`.
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The first section of this file lists eggs which are required by `egg2nix`
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itself; all other eggs go into the second section. After editing, follow the
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procedure for updating eggs.
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doc/languages-frameworks/index.xml
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doc/languages-frameworks/index.xml
···
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<xi:include href="android.section.xml" />
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<xi:include href="beam.section.xml" />
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<xi:include href="bower.section.xml" />
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<xi:include href="chicken.section.xml" />
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<xi:include href="coq.section.xml" />
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<xi:include href="crystal.section.xml" />
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<xi:include href="cuda.section.xml" />
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pkgs/development/compilers/chicken/5/eggs.nix
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pkgs/development/compilers/chicken/5/eggs.nix
···
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{ pkgs }:
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{ pkgs, stdenv }:
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rec {
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inherit (pkgs) eggDerivation fetchegg;
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···
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];
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};
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r7rs = eggDerivation {
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name = "r7rs-1.0.5";
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src = fetchegg {
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name = "r7rs";
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version = "1.0.5";
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sha256 = "0zyi1z4m1995hm2wfc5wpi8jjgxcwk03qknq5v2ygff3akxazsf6";
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};
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buildInputs = [
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matchable
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srfi-1
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srfi-13
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];
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};
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srfi-1 = eggDerivation {
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name = "srfi-1-0.5.1";
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···
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};
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srfi-13 = eggDerivation {
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name = "srfi-13-0.3";
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name = "srfi-13-0.3.1";
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src = fetchegg {
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name = "srfi-13";
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version = "0.3";
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sha256 = "0yaw9i6zhpxl1794pirh168clprjgmsb0xlr96drirjzsslgm3zp";
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version = "0.3.1";
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sha256 = "12ryxs3w3las0wjdh0yp52g1xmyq1fb48xi3i26l5a9sfx7gbilp";
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};
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buildInputs = [
···
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buildInputs = [
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];
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};
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srfi-145 = eggDerivation {
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name = "srfi-145-0.1";
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src = fetchegg {
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name = "srfi-145";
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version = "0.1";
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sha256 = "1r4278xhpmm8gww64j6akpyv3qjnn14b6nsisyb9qm7yx3pkpim9";
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};
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buildInputs = [
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];
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};
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srfi-189 = eggDerivation {
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name = "srfi-189-0.1";
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src = fetchegg {
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name = "srfi-189";
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version = "0.1";
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sha256 = "1nmrywpi9adi5mm1vcbxxsgw0j3v6m7s4j1mii7icj83xn81cgvx";
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};
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buildInputs = [
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r7rs
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srfi-1
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srfi-145
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];
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};
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