Package: wnpp
Severity: wishlist
Owner: Bo YU <tsu.y...@gmail.com>
X-Debbugs-Cc: debian-de...@lists.debian.org

* Package name    : lem
  Version         : 2022-12-10 
  Upstream Contact: Lem Devs <cl-lem-...@lists.cam.ac.uk>
* URL             : https://github.com/rems-project/lem
* License         : BSD-3
  Programming Lang: OCaml
  Description     : Lem semantic definition language


Lem is a tool for lightweight executable mathematics, for writing, managing, 
and publishing large-scale portable semantic definitions, with export to LaTeX, 
executable code (currently OCaml) and interactive theorem provers (currently 
Coq, HOL4, and Isabelle/HOL, though the generated Coq is not necessarily 
idiomatic). It is also intended as an intermediate language for generating 
definitions from domain-specific tools, and for porting definitions between 
interactive theorem proving systems.

The language, originally based on a pure fragment of OCaml, combines features 
familiar from functional programming languages with logical constructs. From 
functional programming languages we take pure higher-order functions, general 
recursion, recursive algebraic datatypes, records, lists, pattern matching, 
parametric polymorphism, a simple type class mechanism for overloading, and a 
simple module system. To these we add logical constructs familiar in provers: 
universal and existential quantification, sets (including set comprehensions), 
relations, finite maps, inductive relation definitions, and lemma statements. 
Then there are facilities to let the user tune how Lem definitions are mapped 
into the various targets (by declaring target representations and controlling 
notation, renaming, inlining, and type classes), to generate witness types and 
executable functions from inductive relations, and for assertions.

------------------------->>>>-------------------
The package is a dependency of sail[0] and linksem[1] and then I will
maintian it under Debian ocaml team.

[0]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1065419
[1]: https://github.com/rems-project/linksem


-- 
Regards,
--
  Bo YU

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