Use weak dependencies

Author: mulimoen

.github/workflows/ci.yml

@@ -245,7 +245,7 @@ jobs:
         with: {submodules: true}
       - name: Install Rust
         uses: actions-rs/toolchain@v1
-        with: {toolchain: 1.51, profile: minimal, override: true}
+        with: {toolchain: 1.60, profile: minimal, override: true}
       - name: Build and test all crates
         run:
           cargo test --workspace -vv --features=hdf5-sys/static --exclude=hdf5-derive

CHANGELOG.md

@@ -12,6 +12,8 @@
 ### Changed
 
 - The `H5Type` derive macro now uses `proc-macro-error` to emit error messages.
+- Features have been reworked to use the new dependency resolution. This bumps MSRV.
+- MSRV is increased to 1.60.
 
 ### Fixed
 

Cargo.toml

@@ -14,9 +14,14 @@ categories = ["science", "filesystem"]
 
 [features]
 default = []
-mpio = ["mpi-sys", "hdf5-sys/mpio"]
-lzf = ["lzf-sys", "errno"]
-blosc = ["blosc-sys"]
+mpio = ["dep:mpi-sys", "hdf5-sys/mpio"]
+lzf = ["dep:lzf-sys", "dep:errno"]
+blosc = ["dep:blosc-sys"]
+zlib = ["hdf5-sys/zlib"]
+static = ["hdf5-sys/static"]
+1_10_or_later = ["hdf5-sys/1_10_or_later"]
+1_12_or_later = ["hdf5-sys/1_12_or_later"]
+1_13_or_later = ["hdf5-sys/1_13_or_later"]
 # The features with version numbers such as 1.10.3, 1.12.0 are metafeatures
 # and is only available when the HDF5 library is at least this version.
 # Features have_direct and have_parallel are also metafeatures and dependent

hdf5-src/Cargo.toml

@@ -37,7 +37,7 @@ exclude = [
 
 [features]
 hl = []
-zlib = ["libz-sys"]
+zlib = ["dep:libz-sys"]
 deprecated = []
 threadsafe = []
 1_10 = []

hdf5-sys/Cargo.toml

@@ -22,12 +22,15 @@ hdf5-src = { path = "../hdf5-src", version = "0.8.1", optional = true }  # !V
 # Please see README for further explanation of these feature flags
 [features]
 default = []
-mpio = ["mpi-sys"]
-hl = ["hdf5-src/hl"]
-threadsafe = ["hdf5-src/threadsafe"]
-zlib = ["libz-sys", "hdf5-src/zlib"]
-static = ["hdf5-src"]
-deprecated = ["hdf5-src/deprecated"]
+mpio = ["dep:mpi-sys"]
+hl = ["hdf5-src?/hl"]
+threadsafe = ["hdf5-src?/threadsafe"]
+zlib = ["dep:libz-sys", "hdf5-src?/zlib"]
+static = ["dep:hdf5-src"]
+deprecated = ["hdf5-src?/deprecated"]
+1_10_or_later = ["hdf5-src?/1_10"]
+1_12_or_later = ["hdf5-src?/1_12"]
+1_13_or_later = ["hdf5-src?/1_13"]
 
 [build-dependencies]
 libloading = "0.7"