libcnb 0.21 and CNB targets support

buildpacks/gradle/CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Buildpack API version changed from `0.9` to `0.10`, and so requires `lifecycle` `0.17.x` or newer. ([#662](https://github.com/heroku/buildpacks-jvm/pull/662))
+
 ## [4.1.1] - 2024-05-01
 
 - No changes.

buildpacks/gradle/Cargo.toml

@@ -9,11 +9,11 @@ workspace = true
 [dependencies]
 buildpacks-jvm-shared.workspace = true
 indoc = "2"
-libcnb = "=0.17.0"
-libherokubuildpack = { version = "=0.17.0", default-features = false, features = ["command", "error", "log"] }
+libcnb = "=0.21.0"
+libherokubuildpack = { version = "=0.21.0", default-features = false, features = ["command", "error", "log"] }
 nom = "7"
 serde = { version = "1", features = ["derive"] }
 
 [dev-dependencies]
 buildpacks-jvm-shared-test.workspace = true
-libcnb-test = "=0.17.0"
+libcnb-test = "=0.21.0"

buildpacks/gradle/buildpack.toml

@@ -1,4 +1,4 @@
-api = "0.9"
+api = "0.10"
 
 [buildpack]
 id = "heroku/gradle"
@@ -12,8 +12,14 @@ clear-env = true
 [[buildpack.licenses]]
 type = "BSD-3-Clause"
 
+# This workaround can be removed once a new Pack release ships that includes:
+# https://github.com/buildpacks/pack/pull/2081
 [[stacks]]
 id = "*"
 
+[[targets]]
+os = "linux"
+arch = "amd64"
+
 [metadata.release]
 image = { repository = "docker.io/heroku/buildpack-gradle" }