build: add minimal dependency versions test

Add a check that the dependency contraints of the crate are till valid,
specifically, the minimum versions. This ensrues we do not start to
depend on new features of a dependency by accident without updating the
manifest.

This new test revealed that we need tokio to be at least version 1.19
since we are using the "is_finished" function.

The "-f" option was added to the delete lockfile recipe so that no
errors are thrown if the file does not exist.

Author: nyonson

.github/workflows/ci.yml

@@ -68,3 +68,12 @@ jobs:
       - uses: extractions/setup-just@v3
       - uses: actions-rust-lang/setup-rust-toolchain@v1
       - run: just test integration
+  min-versions:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: extractions/setup-just@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: nightly
+      - run: just test min-versions

Cargo.toml

@@ -18,7 +18,7 @@ bitcoin = { version = "0.32.5", default-features = false, features = [
 bip324 = { version = "0.7.0", default-features = false, features = [
     "tokio",
 ] }
-tokio = { version = "1", default-features = false, features = [
+tokio = { version = "1.19", default-features = false, features = [
     "rt-multi-thread",
     "sync",
     "time",
@@ -43,7 +43,7 @@ hex = { version = "0.4.0" }
 tracing = "0.1"
 tracing-subscriber = "0.3"
 tempfile = "3"
-tokio = { version = "1.37", default-features = false, features = [
+tokio = { version = "1.19", default-features = false, features = [
     "full",
 ] }
 

justfile

@@ -11,7 +11,7 @@ check:
   cargo clippy --all-targets -- -D warnings
   cargo check --all-features
 
-# Run a test suite: unit, integration, features, msrv, or sync.
+# Run a test suite: unit, integration, features, msrv, min-versions, or sync.
 test suite="unit":
   just _test-{{suite}}
 
@@ -36,6 +36,11 @@ _test-features:
   cargo test --lib --no-default-features
   cargo test --lib --no-default-features --features rusqlite,filter-control 
 
+# Test that minimum versions of dependency contraints are still valid.
+_test-min-versions:
+  just _delete-lockfile
+  cargo +nightly check --all-features -Z direct-minimal-versions
+
 # Check code with MSRV compiler.
 _test-msrv:
   # Handles creating sandboxed environments to ensure no newer binaries sneak in.
@@ -54,7 +59,7 @@ _delete-data:
   rm -rf light_client_data
 
 _delete-lockfile:
-  rm Cargo.lock
+  rm -f Cargo.lock
 
 _delete-branches:
   git branch --merged | grep -v \* | xargs git branch -d