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Changelog

9 AUG 2022 Version 1.8.0:

  • Abandoned Menhir in favour of new extensible parser.
  • Abandoned useless “module … where” syntax.
  • Deprecated useless (and inconsistent) irrelevance option.
  • Rename pre-eval option to normalize.
  • Several major optimisations.
  • Built-in natural numbers ℕ.
  • typeof & domainof.
  • Syntax sugar for let.

27 MAY 2022 Version 1.4.1:

  • Fix of major bug leading to inconstistency.
  • section and variables (for example look in experiments/test.anders).
  • Dropped support for extracting into cubicaltt.
  • Reorganized and cleaned up library.
  • Coequalizer.

6 APR 2022 Version 1.4.0 Microkernel Pipeline:

  • Repository in https://github.com/forked-from-1kasper/anders.
  • Microkernel Architecture: kernel separated from frontend (including REPL) with open binary protocols.
  • Universe polymorphism (like in Agda).
  • Overhaul of DNF solver for a lot better performance (so constcubes.anders finally works).
  • Bugfixes for Glue (including agda/agda#5755).
  • Abandoned syntax highlighting for MC.

27 JAN 2022 Version 1.1.1 Univalence:

  • Glue, glue and unglue primitives.
  • 𝟎, 𝟏, 𝟐, and W-types.
  • Infinitesimal Shape Modality ℑ.
  • ZArith for universe levels to avoid inconstistency (see agda/agda#5706).
  • Eliminate a lot of “Variable … was not found” bugs.

11 DEC 2021 Version 0.12.1:

Technical release.

11 DEC 2021 Version 0.12.0:

  • Some of Huber’s rules (see https://simhu.github.io/misc/hcomp.pdf).
  • Support for PartialP primitive.
  • Improved reduction rules for hypercubes.
  • infer is now able to handle cubical systems.
  • Rewritten DNF solver.
  • Accessors for Σ’s.
  • Some optimisations.

15 JUL 2021 Version 0.7.2 Kan Operations:

  • Cubical Subtypes (Sub, inc, ouc).
  • Homogeneous Kan composition (hcomp).
  • Eliminate neutral elements (they were derived from Mini-TT).
  • Initial Base Library (OPAM share folder).
  • New options: silent and indices.

6 JUL 2021 Version 0.7.1 Binary Distribution:

  • infer is now able to handle lambdas.
  • Partials, Cubical Systems (Partial, [φ ↦ u]).
  • Strict Equality (Id, ref, idJ).
  • Minor optimizations.
  • OPAM package.
  • ISC license.

5 JUL 2021 Version 0.7 MLTT Internalization:

  • Universes hierarchy Uₙ.
  • PathP, path lambdas (<i> f), path application @.
  • CHM interval and de Morgan algebra over it (∧, ∨ and -).
  • Pretypes hierarchy Vₙ.
  • Generalized Transport (transp).
  • infer allowing to write definition without type ascription.
  • girard option.
  • (Wide) UTF-8 support.
  • Debug traces.
  • REPL.

14 APR 2020 Development starts here:

  • Type checker based on my (unpublished) port Mini-TT to F#.
  • Parser & Lexer (Menhir + ocamllex).
  • MLTT ΠΣ primitives.