Revert "feat: constant folding implemented for core and float extensi…

…on (#758)"

This reverts commit 664fe89.

.github/workflows/ci.yml

@@ -56,13 +56,13 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        rust: ['1.75', stable, beta, nightly]
+        rust: ['1.70', stable, beta, nightly]
         # workaround to ignore non-stable tests when running the merge queue checks
         # see: https://github.community/t/how-to-conditionally-include-exclude-items-in-matrix-eg-based-on-branch/16853/6
         isMerge:
             - ${{ github.event_name == 'merge_group' }}
         exclude:
-          - rust: '1.75'
+          - rust: '1.70'
             isMerge: true
           - rust: beta
             isMerge: true

Cargo.toml

@@ -12,7 +12,7 @@ description = "Hierarchical Unified Graph Representation"
 #categories = [] # TODO
 
 edition = "2021"
-rust-version = "1.75"
+rust-version = "1.70"
 
 [lib]
 # Using different names for the lib and for the package is supported, but may be confusing.
@@ -46,7 +46,7 @@ lazy_static = "1.4.0"
 petgraph = { version = "0.6.3", default-features = false }
 context-iterators = "0.2.0"
 serde_json = "1.0.97"
-delegate = "0.12.0"
+delegate = "0.11.0"
 rustversion = "1.0.14"
 paste = "1.0"
 strum = "0.25.0"

README.md

@@ -34,6 +34,6 @@ See [DEVELOPMENT.md](DEVELOPMENT.md) for instructions on setting up the developm
 This project is licensed under Apache License, Version 2.0 ([LICENSE][] or http://www.apache.org/licenses/LICENSE-2.0).
 
   [build_status]: https://github.com/CQCL/hugr/workflows/Continuous%20integration/badge.svg?branch=main
-  [msrv]: https://img.shields.io/badge/rust-1.75.0%2B-blue.svg
+  [msrv]: https://img.shields.io/badge/rust-1.70.0%2B-blue.svg
   [codecov]: https://img.shields.io/codecov/c/gh/CQCL/hugr?logo=codecov
   [LICENSE]: LICENCE

src/algorithm.rs

@@ -1,5 +1,4 @@
 //! Algorithms using the Hugr.
 
-pub mod const_fold;
 mod half_node;
 pub mod nest_cfgs;

src/extension.rs

@@ -28,11 +28,9 @@ pub use op_def::{
 };
 mod type_def;
 pub use type_def::{TypeDef, TypeDefBound};
-mod const_fold;
 pub mod prelude;
 pub mod simple_op;
 pub mod validate;
-pub use const_fold::{ConstFold, ConstFoldResult};
 pub use prelude::{PRELUDE, PRELUDE_REGISTRY};
 
 /// Extension Registries store extensions to be looked up e.g. during validation.