ci: bump msrv

.github/workflows/build.yml

@@ -72,7 +72,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        toolchain: [ nightly, beta, stable, 1.69.0 ]
+        toolchain: [ nightly, beta, stable ]
     steps:
       - uses: actions/checkout@v2
       - name: Install rust ${{ matrix.toolchain }}
@@ -85,3 +85,20 @@ jobs:
         with:
           command: check
           args: --workspace --all-targets --all-features
+
+  msrv-build:
+    name: "toolchains (msrv)"
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v5
+      - name: Nix Cache
+        uses: DeterminateSystems/magic-nix-cache-action@v2
+      - name: Rust Cache
+        uses: Swatinem/rust-cache@v2
+      - name: Build rgb-std
+        run: nix build
+      - name: Build rgb-invoice
+        run: nix build .#rgb-invoice

.gitignore

@@ -10,3 +10,4 @@
 *.swp
 
 /dep_test
+result

Cargo.toml

@@ -17,7 +17,7 @@ homepage = "https://github.com/RGB-WG"
 repository = "https://github.com/RGB-WG/rgb-std"
 keywords = ["bitcoin", "lightning", "rgb", "smart-contracts", "lnp-bp"]
 categories = ["cryptography::cryptocurrencies"]
-rust-version = "1.69.0" # Due to TOML dependency in amplify crate
+rust-version = "1.70.0"
 edition = "2021"
 license = "Apache-2.0"
 

README.md

@@ -56,7 +56,7 @@ by default.
 
 ### MSRV
 
-Minimum supported rust compiler version (MSRV): 1.66, rust 2021 edition.
+Minimum supported rust compiler version (MSRV) is shown in `rust-version` of `Cargo.toml`.
 
 ## Contributing
 

flake.nix

@@ -0,0 +1,57 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.flake-utils.follows = "flake-utils";
+    };
+
+    crane = {
+      url = "github:ipetkov/crane";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.flake-utils.follows = "flake-utils";
+    };
+
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, crane, rust-overlay, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs {
+          inherit system overlays;
+        };
+
+        cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
+        rust = pkgs.rust-bin.stable."${cargoToml.workspace.package."rust-version"}".default;
+        craneLib = (crane.mkLib pkgs).overrideToolchain rust;
+      in
+      with pkgs;
+      {
+        devShell = mkShell {
+          buildInputs = [
+            openssl
+            pkg-config
+            rust
+          ];
+        };
+        packages = rec {
+          default = rgb-std;
+          rgb-std = craneLib.buildPackage {
+            strictDeps = true;
+            src = ./.;
+            cargoExtraArgs = "-p rgb-std";
+            doCheck = false;
+          };
+          rgb-invoice = craneLib.buildPackage {
+            strictDeps = true;
+            src = ./.;
+            cargoExtraArgs = "-p rgb-invoice";
+            doCheck = false;
+          };
+        };
+      }
+    );
+}