I tried chez scheme and I think GNU Guile is a better platform for what I am trying to achieve, so I am back.
I also know better what I want to achieve. I will create a triple store that comply with semantic web standard that is a RDF triple store. At [0] and [1] you will find a primer on what is RDF in the former and the concepts in the latter. [0] https://www.w3.org/TR/rdf11-primer/ [1] https://www.w3.org/TR/rdf11-concepts/ It will also be branch-able etc... like git. Also, I also plan to implement sparql. If you find sparql difficult I recommend the tutorial at data.world [2] in the mean time. It's not very difficult and looks like SQL. Hence I also plan to implement sparql [3]. [2] https://docs.data.world/tutorials/sparql/ [3] https://www.w3.org/TR/sparql11-overview/ What I want to do is something similar to data.world, that is a gitlab-like platform for data and replace the use of git in projects like datahub.io [4]. [4] http://datahub.io/core/registry Enough talking, what is the status? Well I finished porting what I had in chez and can now run the following scenario: - In master branch, I commit two triples - In other branch, that is orphan branch, I commit two triples among where one of them overlaps with master. - I can query both branch - In a merge commit, I fix the conflict between both branch. - I can query the resulting branch and get the expected result. The code might be easier to read [5] [5] https://github.com/amirouche/neon/blob/master/guile/neon.scm What is missing, in order of difficulty: - microkanren package https://framagit.org/a-guile-mind/microkanren - wiredtiger 3 package - Turtle aka. .ttl format parser https://www.w3.org/TR/turtle/ - sparql queries parser https://www.w3.org/TR/rdf-sparql-query/ - I am not sure of the status of guile-squee yet https://notabug.org/cwebber/guile-squee/ - pluggable backends If you want to work one of this item, send me an email. What I plan to work on next: There is a semantic difference between neon and RDF triple stores. In a triple store you can have as many times as you want the same attribute given a subject. That is (ref subject) doesn't return a proper alist. There is two other links that remain to be cited - https://www.w3.org/TR/rdf11-mt/ - https://www.w3.org/TR/2014/NOTE-rdf11-datasets-20140225/ Happy hacking, -- Amirouche ~ amz3 ~ http://www.hyperdev.fr