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#+TITLE: kolam
#+MACRO: ci-badge [[https://ci.systemreboot.net/jobs/$1][https://ci.systemreboot.net/badge/$1.svg]]
{{{ci-badge(kolam-with-guile-3.0)}}} {{{ci-badge(kolam-with-guile-3.0-latest)}}} {{{ci-badge(kolam-website)}}}
kolam is a [[https://graphql.org/][GraphQL]] implementation for Scheme. kolam features a parser
to parse and serialize GraphQL documents, a type system to create
GraphQL schemas, an execution engine to execute GraphQL queries, and a
HTTP handler to implement a HTTP GraphQL endpoint.
* Download
Download release tarballs.
- 2022-01-05 [[./releases/kolam-0.1.0.tar.lz][kolam-0.1.0.tar.lz]] [[./releases/kolam-0.1.0.tar.lz.asc][GPG Signature]]
Download [[https://systemreboot.net/about/arunisaac.pub][public signing key]].
Browse the [[https://git.systemreboot.net/kolam][development version]] of kolam hosted in a git repository.
* Portability
Currently, kolam only supports GNU Guile. But, kolam wishes to support
other Scheme implementations and patches improving its portability are
welcome.
* Contributing
kolam only implements a subset of the [[https://spec.graphql.org/][GraphQL spec]], but aims to be
more complete. Here is a rough roadmap. Your help is welcome! Please
write to [[mailto:arunisaac@systemreboot.net][arunisaac@systemreboot.net]].
- [X] Parse GraphQL documents to scheme
- [X] Serialize parsed documents back to GraphQL
- Type system
- [X] Object types
- [X] Scalar types (built-in and custom)
- [X] Enumeration types
- [X] List types
- [X] Non-null types
- [ ] Interfaces
- [ ] Union types
- [ ] Input types
- [ ] Validate GraphQL queries
- Execute GraphQL queries
- [X] Query operations
- [ ] Mutation operations
- [ ] Subscription operations
- [X] Field aliases
- [ ] Fragments
- [ ] Parameterized queries
- [ ] Schema introspection
- [X] HTTP endpoint
* License
kolam is free software released under the terms of the [[https://www.gnu.org/licenses/agpl.html][GNU Affero
General Public License]], either version 3 of the License, or (at your
option) any later version.
* What does "kolam" mean?
A [[https://en.wikipedia.org/wiki/Kolam][kolam]] is a traditional Tamil decorative art form. It is an intricate
geometrical drawing composed of straight lines, curves and loops,
drawn around a grid pattern of dots.
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