fall back to pyo3 0.21, to support rust <1.79, until 0.22.2 is released

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pypipegraph2"
-version = "3.1.1"
+version = "3.1.2"
 edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -23,7 +23,7 @@ path = "src/main_iterations_with_fail.rs"
 
 
 [dependencies]
-pyo3 = { version = "0.22", features = ["extension-module", "abi3", "abi3-py38"] }
+pyo3 = { version = "0.21", features = ["extension-module", "abi3", "abi3-py38"] }
 petgraph = "0.6.2"
 env_logger = "0.9.3"
 log = "0.4.14"

flake.nix

@@ -22,7 +22,7 @@
     system = "x86_64-linux";
     overlays = [(import rust-overlay)];
     pkgs = import nixpkgs {inherit system overlays;};
-    rust = pkgs.rust-bin.stable."1.79.0".default.override {
+    rust = pkgs.rust-bin.stable."1.78.0".default.override {
       targets = ["x86_64-unknown-linux-gnu" "x86_64-unknown-linux-musl"];
       extensions = ["llvm-tools-preview"];
     };

pyproject.toml

@@ -7,7 +7,7 @@ module-name = "pypipegraph2.pypipegraph2"
 
 [project]
 name = "pypipegraph2"
-version = "3.1.1"
+version = "3.1.2"
 description = "Advanced python 'what changed and what do we need to do' tracking"
 # long-description = "README.md"
 authors = [

python/pypipegraph2/__init__.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-__version__ = "3.1.1"
+__version__ = "3.1.2"
 
 import logging
 import contextlib

setup.cfg

@@ -2,7 +2,7 @@
 [metadata]
 name = pypipegraph2
 description = Advanced python 'what changed and what do we need to do' tracking
-version = 3.1.1
+version = 3.1.2
 author = Florian Finkernagel
 author-email = [email protected]
 license = mit