app

commit 11b6337eba8948a2f01635cbf63b8cfdd59a3cf8
parent bb8c76c25027b2c8871c35fec82fe3b75bab6d05
Author: triesap <tyson@radroots.org>
Date:   Sun,  2 Aug 2026 19:37:50 +0000

build(desktop): add the Rust core task

- expose the native FFI build through the desktop Gradle module
- track Rust manifests sources migrations and lockfile inputs
- retain the canonical core target directory for artifacts
- document the Gradle-to-Cargo build boundary

Diffstat:
M
app/desktop/build.gradle.kts
 | 
28
++++++++++++++++++++++++++++
M
docs/architecture/rust-ffi-boundary.md
 | 
5
+++++
M
docs/implementation/nostr-runtime-rcld.md
 | 
2
+-

3 files changed, 34 insertions(+), 1 deletion(-)
diff --git a/app/desktop/build.gradle.kts b/app/desktop/build.gradle.kts
@@ -5,6 +5,7 @@ import org.gradle.api.file.ConfigurableFileCollection
 import org.gradle.api.provider.Property
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.InputFiles
+import org.gradle.api.tasks.Exec
 import org.gradle.api.tasks.PathSensitive
 import org.gradle.api.tasks.PathSensitivity
 import org.gradle.api.tasks.TaskAction
@@ -19,6 +20,33 @@ plugins {
     alias(libs.plugins.compose.compiler)
 }
 
+val rustManifest = rootProject.layout.projectDirectory.file("core/Cargo.toml")
+val rustSources = rootProject.fileTree("core") {
+    include("Cargo.toml", "Cargo.lock", "rust-toolchain.toml", "crates/**/*.rs", "crates/**/*.sql")
+    exclude("target/**")
+}
+val rustLibraryName = when {
+    System.getProperty("os.name").startsWith("Mac") -> "libradroots_studio_ffi.dylib"
+    System.getProperty("os.name").startsWith("Windows") -> "radroots_studio_ffi.dll"
+    else -> "libradroots_studio_ffi.so"
+}
+val rustDebugLibrary = rootProject.layout.projectDirectory
+    .file("core/target/debug/$rustLibraryName")
+
+val buildRustCore by tasks.registering(Exec::class) {
+    workingDir(rootProject.projectDir)
+    commandLine(
+        "cargo",
+        "build",
+        "--manifest-path",
+        rustManifest.asFile.absolutePath,
+        "-p",
+        "radroots-studio-ffi",
+    )
+    inputs.files(rustSources)
+    outputs.file(rustDebugLibrary)
+}
+
 dependencies {
     implementation(compose.desktop.currentOs)
     implementation(libs.compose.foundation)
diff --git a/docs/architecture/rust-ffi-boundary.md b/docs/architecture/rust-ffi-boundary.md
@@ -39,3 +39,8 @@ On macOS this produces
 `core/target/debug/libradroots_studio_ffi.dylib`. Other desktop hosts use the
 platform-equivalent `radroots_studio_ffi` dynamic-library filename under the
 same Cargo profile directory.
+
+Gradle exposes the same operation as `:app:desktop:buildRustCore`. The task
+tracks Rust manifests, lockfile, sources, and migrations as inputs and the
+current-host debug dynamic library as its output. It does not redirect Cargo's
+target directory.
diff --git a/docs/implementation/nostr-runtime-rcld.md b/docs/implementation/nostr-runtime-rcld.md
@@ -525,7 +525,7 @@ handoff commit sequence.
 - [x] 42. Expose approved AppCore commands through UniFFI.
 - [x] 43. Expose observer callback and deregistration through UniFFI.
 - [x] 44. Build native library artifacts from Cargo.
-- [ ] 45. Add Gradle task for Cargo build.
+- [x] 45. Add Gradle task for Cargo build.
 - [ ] 46. Add Gradle UniFFI binding generation and generated source set.
 - [ ] 47. Stage native library for development, tests, and packaged app.