add MSRV (delta-io#504)

add MSRV and test it in CI with `cargo-msrv`. currently set to rust
`1.80` (version when `LazyLock` was introduced)

.github/workflows/build.yml

@@ -20,6 +20,27 @@ jobs:
       - uses: Swatinem/rust-cache@v2
       - name: format
         run: cargo fmt -- --check
+  msrv:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install minimal stable and cargo msrv
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: default
+          toolchain: stable
+          override: true
+      - uses: Swatinem/rust-cache@v2
+      - name: Install cargo-msrv
+        shell: bash
+        run: |
+          cargo install cargo-msrv --locked
+      - name: verify-msrv
+        run: |
+          cargo msrv --path kernel/ verify --all-features
+          cargo msrv --path derive-macros/ verify --all-features
+          cargo msrv --path ffi/ verify --all-features
+          cargo msrv --path ffi-proc-macros/ verify --all-features
   docs:
     runs-on: ubuntu-latest
     env:

Cargo.toml

@@ -18,6 +18,7 @@ keywords = ["deltalake", "delta", "datalake"]
 license = "Apache-2.0"
 repository = "https://github.com/delta-io/delta-kernel-rs"
 readme = "README.md"
+rust-version = "1.80"
 version = "0.4.0"
 
 [workspace.dependencies]

acceptance/Cargo.toml

@@ -8,6 +8,7 @@ license.workspace = true
 repository.workspace = true
 readme.workspace = true
 version.workspace = true
+rust-version.workspace = true
 
 [dependencies]
 arrow-array = { workspace = true }

derive-macros/Cargo.toml

@@ -8,6 +8,7 @@ license.workspace = true
 repository.workspace = true
 readme.workspace = true
 version.workspace = true
+rust-version.workspace = true
 
 [lib]
 proc-macro = true
@@ -16,5 +17,3 @@ proc-macro = true
 proc-macro2 = "1"
 syn = { version = "2.0", features = ["extra-traits"] }
 quote = "1.0"
-
-

ffi-proc-macros/Cargo.toml

@@ -7,12 +7,13 @@ keywords.workspace = true
 license.workspace = true
 repository.workspace = true
 readme.workspace = true
+rust-version.workspace = true
 version.workspace = true
 
 [lib]
 proc-macro = true
 
 [dependencies]
 proc-macro2 = "1"
-syn = { version = "2.0", features = ["extra-traits"] }
+syn = { version = "2.0", features = ["extra-traits", "full"] }
 quote = "1.0"

ffi/Cargo.toml

@@ -7,6 +7,7 @@ license.workspace = true
 repository.workspace = true
 readme.workspace = true
 version.workspace = true
+rust-version.workspace = true
 build = "build.rs"
 
 [lib]

kernel/Cargo.toml

@@ -10,6 +10,7 @@ readme.workspace = true
 version.workspace = true
 # exclude golden tests + golden test data since they push us over 10MB crate size limit
 exclude = ["tests/golden_tables.rs", "tests/golden_data/" ]
+rust-version.workspace = true
 
 [package.metadata.docs.rs]
 all-features = true