fix(boil): Improve VersionExt::is_floating impl (#1571)

* fix(boil): Improve VersionExt::is_floating impl

This commit contains two improvements to the VersionExt::is_floating
function:

1. It relaxes the requirements for 0.0.0-dev versions to be able to
   include extra tag data, eg. 0.0.0-dev-pr123
2. It now uses a regular expression to check whether the prerelease
   string is considered floating. The previous solution was too
   limited to catch more complicated patterns.

* fix: Use correct nightly Rust version in pre-commit config

Author: Techassi

.pre-commit-config.yaml

@@ -78,7 +78,7 @@ repos:
       - id: cargo-rustfmt
         name: cargo-rustfmt
         language: system
-        entry: cargo +nightly-2025-10-23 fmt --all -- --check
+        entry: cargo +nightly-2026-07-01 fmt --all -- --check
         stages: [pre-commit, pre-merge-commit]
         pass_filenames: false
         files: \.rs$

rust/boil/src/utils.rs

@@ -1,9 +1,19 @@
-use std::{process::Command, str::FromStr};
+use std::{process::Command, str::FromStr, sync::LazyLock};
 
+use regex::Regex;
 use snafu::{ResultExt, Snafu};
 
 use crate::{cli::HostPort, core::platform::Architecture};
 
+/// A regular expression to check whether the prerelease string of a semantic version is considered
+/// floating.
+///
+/// Used in [`VersionExt::is_floating`].
+static SEMVER_PRERELEASE_FLOATING: LazyLock<Regex> = LazyLock::new(|| {
+    // https://regex101.com/?regex=%5Edev%28%3F%3A-.%2B%29%3F%24%7C%5Epr.%2B%24&testString=dev-pr-321-amd64&flags=gmu&flavor=rust&delimiter=%22
+    Regex::new("^dev(?:-.+)?$|^pr.+$").expect("static regular expression must compile")
+});
+
 // FIXME (@Techassi): We should pull this in from a central pice of code, like stackable-shared.
 // stackable-shared needs to add a few features to be able to properly select _only_ what is needed
 // without pulling in too many unused deps.
@@ -18,7 +28,7 @@ impl VersionExt for semver::Version {
         self.major == 0
             && self.minor == 0
             && self.patch == 0
-            && (self.pre.starts_with("pr") || self.pre.as_str() == "dev")
+            && SEMVER_PRERELEASE_FLOATING.is_match(&self.pre)
     }
 
     fn floating(&self) -> String {
@@ -123,3 +133,34 @@ impl CommandExt for Command {
         if predicate { self.arg(arg) } else { self }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use rstest::rstest;
+
+    use super::*;
+
+    #[rstest]
+    #[case("0.0.0-pr1234-extra-tag-data1234-amd64")]
+    #[case("0.0.0-pr1234-extra-tag-data1234")]
+    #[case("0.0.0-dev-extra-tag-data1234")]
+    #[case("0.0.0-pr1234")]
+    #[case("0.0.0-dev")]
+    fn is_floating(#[case] input: &str) {
+        let version =
+            semver::Version::from_str(input).expect("input must be valid semantic version");
+        assert!(version.is_floating());
+    }
+
+    #[rstest]
+    #[case("0.0.0-bar1234-amd64")]
+    #[case("0.0.0-devel")]
+    #[case("0.0.0-foo")]
+    #[case("0.0.0-pr")]
+    #[case("0.0.0")]
+    fn is_not_floating(#[case] input: &str) {
+        let version =
+            semver::Version::from_str(input).expect("input must be valid semantic version");
+        assert!(!version.is_floating());
+    }
+}