Exclude some unnecessary files from the crate

[musicinmybrain]

Suggested in the review for a rust-datatest-stable package for Fedora. These files are only useful for upstream development, and aren’t useful for crate users.

[sunshowers]

Thanks! Thoughts on making it an allowlist using include?

[musicinmybrain]

Thanks! Thoughts on making it an allowlist using include?

No objections to that. It could look something like this:

diff --git a/Cargo.toml b/Cargo.toml
index 6cf6696..a9ab3fd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,13 +10,12 @@ edition = "2021"
 categories = ["development-tools::testing"]
 keywords = ["datatest", "data-driven-tests", "test-harness"]
 rust-version = "1.72"
-exclude = [
-    ".cargo/**",
-    ".github/**",
-    ".gitignore",
-    "Justfile",
-    "release.toml",
-    "scripts/**",
+include = [
+    "CHANGELOG.md",
+    "LICENSE*",
+    "README.md",
+    "src/**",
+    "tests/**",
 ]
 
 [badges]

which is equivalent, except that I hadn’t excluded CONTRIBUTING.md, but I’m not bothering to include it, because it seems like it, too, is really only useful for interacting with upstream.

I’ve left the tests in for now because they’re useful to me: I maintain a rust-datatest-stable package in Fedora, and we package Rust libraries using published crates from crates.io, so this means I can run the tests with our compilers on all of our primary architectures, which we’ve found really does catch bugs in practice across the Rust stack. However, there is a valid argument that most crate users don’t need the tests, and some people prefer to omit them, so if you ask me to omit the tests, I will. It would reduce the size of the crate archive to 26136 bytes, from 30435 with the tests included and 34478 bytes before this PR.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.47%. Comparing base (a00be6e) to head (3954496).
⚠️ Report is 26 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #424      +/-   ##
==========================================
+ Coverage   87.59%   88.47%   +0.87%     
==========================================
  Files           4        4              
  Lines         403      399       -4     
==========================================
  Hits          353      353              
+ Misses         50       46       -4     

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[sunshowers]

Thanks -- let's include the tests.