bryan-minimal · Oct 16, 2026 · Oct 16, 2026 · Oct 16, 2026 · Oct 16, 2026 · Oct 16, 2026
@@ -0,0 +1,93 @@
+let { Attrs, BuildSpec, Local, OutputBin, OutputData, OutputLib, Source, Test, .. } = import "minimal.ncl" in
+let { target, .. } = import "config.ncl" in
+let base = import "../base/build.ncl" in
+let alsa-lib = import "../alsa-lib/build.ncl" in
+let glibc = import "../glibc/build.ncl" in
+let zlib = import "../zlib/build.ncl" in
+
+let version = "21.0.12.1" in
+let build_num = "1" in
+let dl_base = "https://github.com/adoptium/temurin21-binaries/releases/download/jdk-%{version}+%{build_num}" in
+
+let { amd64_sha256, arm64_sha256 } = {
+  amd64_sha256 = "ce79869e1307ed8ee1e2baa86a412b1eb5b75d10a01006d788a6f968bcfaee94",
+  arm64_sha256 = "23e37e026f12f3e706f18938ff611db3032d075b09d0879a25d06718c773e223",
+}
+in
+
+# Eclipse Temurin 21, the previous Java LTS. This was `jdk` until `jdk`
+# became the current LTS (jdk-25); kept for projects pinned to 21.
+{
+  name = "jdk-21",
+  build_deps = [
+    { file = "build.sh" } | Local,
+    match {
+      { arch = 'Amd64, .. } =>
+        {
+          url = "%{dl_base}/OpenJDK21U-jdk_x64_linux_hotspot_%{version}_%{build_num}.tar.gz",
+          sha256 = amd64_sha256,
+        } | Source,
+      { arch = 'Arm64, .. } =>
+        {
+          url = "%{dl_base}/OpenJDK21U-jdk_aarch64_linux_hotspot_%{version}_%{build_num}.tar.gz",
+          sha256 = arm64_sha256,
+        } | Source,
+    } target,
+    base,
+  ],
+  runtime_deps = [
+    alsa-lib,
+    glibc,
+    zlib,
+  ],
+
+  cmd = "./build.sh",
+  build_args = {
+    include version,
+    include build_num,
+  },
+
+  outputs = {
+    bins = { glob = "usr/bin/*" } | OutputBin,
+
+    jvm_bins = { glob = "usr/lib/jvm/bin/*" } | OutputBin,
+    jvm_libs = { glob = "usr/lib/jvm/lib/**/*.so*" } | OutputLib,
+    jvm_libdata = { glob = "usr/lib/jvm/lib/**", allow_executable = true } | OutputData,
+
+    jvm_data = { glob = "usr/lib/jvm/{jmod,conf,legal}/**" } | OutputData,
+    jvm_includes = { glob = "usr/lib/jvm/include/**" } | OutputData,
+  },
+
+  attrs =
+    {
+      upstream_version = version,
+      license_spdx = "GPL-2.0-only WITH Classpath-exception-2.0",
+      source_provenance = {
+        category = 'GithubRepo,
+        owner = "adoptium",
+        repo = "temurin21-binaries",
+      },
+    } | Attrs,
+
+  tests = {
+    java_version =
+      {
+        class = 'Standalone,
+        test_deps = [base],
+        cmds = [
+          ["/bin/bash", "-c", "java -version 2>&1 | grep -q '21'"],
+        ],
+      } | Test,
+
+    javac_compile =
+      {
+        class = 'Standalone,
+        test_deps = [base],
+        cmds = [
+          ["/bin/bash", "-c", "echo 'public class Hi { public static void main(String[] a) { System.out.println(\"ok\"); } }' > Hi.java"],
+          ["/bin/javac", "Hi.java"],
+          ["/bin/bash", "-c", "java Hi | grep -q '^ok$'"],
+        ],
+      } | Test,
+  },
+} | BuildSpec
@@ -15,7 +15,9 @@ mkdir -p $OUTPUT_DIR/usr/{bin,lib/jvm}
 # Install the JDK
 cp -r . $OUTPUT_DIR/usr/lib/jvm/
 
-# Symlink key binaries
-for bin in java javac jar jlink jmod jpackage jshell keytool; do
-    ln -sv ../lib/jvm/bin/$bin $OUTPUT_DIR/usr/bin/$bin
+# Put every JDK tool on PATH (jdb, jcmd, jfr, jstack, jmap, javap, jdeps,
+# javadoc, ... -- not just the eight that used to be listed here).
+for path in "$OUTPUT_DIR"/usr/lib/jvm/bin/*; do
+    bin=$(basename "$path")
+    ln -sv "../lib/jvm/bin/$bin" "$OUTPUT_DIR/usr/bin/$bin"
 done
@@ -0,0 +1,95 @@
+let { Attrs, BuildSpec, Local, OutputBin, OutputData, OutputLib, Source, Test, .. } = import "minimal.ncl" in
+let { target, .. } = import "config.ncl" in
+let base = import "../base/build.ncl" in
+let alsa-lib = import "../alsa-lib/build.ncl" in
+let glibc = import "../glibc/build.ncl" in
+let zlib = import "../zlib/build.ncl" in
+
+let version = "25.0.4.1" in
+let build_num = "1" in
+let dl_base = "https://github.com/adoptium/temurin25-binaries/releases/download/jdk-%{version}+%{build_num}" in
+
+let { amd64_sha256, arm64_sha256 } = {
+  amd64_sha256 = "dbb698396d478e7fa2b1e50f4103324b2a99b90569ee27c33f2261f9215cf41e",
+  arm64_sha256 = "69df11a02cfa3ef7d7ca645e03edce6778ec090e100f6ae2b42097865730ac52",
+}
+in
+
+# Eclipse Temurin 25, the current Java LTS (Adoptium's prebuilt OpenJDK
+# binaries). A separate package from `jdk` (Temurin 21, the previous LTS) so
+# projects pick a line explicitly and neither moves under the other. Same
+# layout and outputs as packages/jdk.
+{
+  name = "jdk-25",
+  build_deps = [
+    { file = "build.sh" } | Local,
+    match {
+      { arch = 'Amd64, .. } =>
+        {
+          url = "%{dl_base}/OpenJDK25U-jdk_x64_linux_hotspot_%{version}_%{build_num}.tar.gz",
+          sha256 = amd64_sha256,
+        } | Source,
+      { arch = 'Arm64, .. } =>
+        {
+          url = "%{dl_base}/OpenJDK25U-jdk_aarch64_linux_hotspot_%{version}_%{build_num}.tar.gz",
+          sha256 = arm64_sha256,
+        } | Source,
+    } target,
+    base,
+  ],
+  runtime_deps = [
+    alsa-lib,
+    glibc,
+    zlib,
+  ],
+
+  cmd = "./build.sh",
+  build_args = {
+    include version,
+    include build_num,
+  },
+
+  outputs = {
+    bins = { glob = "usr/bin/*" } | OutputBin,
+
+    jvm_bins = { glob = "usr/lib/jvm/bin/*" } | OutputBin,
+    jvm_libs = { glob = "usr/lib/jvm/lib/**/*.so*" } | OutputLib,
+    jvm_libdata = { glob = "usr/lib/jvm/lib/**", allow_executable = true } | OutputData,
+
+    jvm_data = { glob = "usr/lib/jvm/{jmod,conf,legal}/**" } | OutputData,
+    jvm_includes = { glob = "usr/lib/jvm/include/**" } | OutputData,
+  },
+
+  attrs =
+    {
+      upstream_version = version,
+      license_spdx = "GPL-2.0-only WITH Classpath-exception-2.0",
+      source_provenance = {
+        category = 'GithubRepo,
+        owner = "adoptium",
+        repo = "temurin25-binaries",
+      },
+    } | Attrs,
+
+  tests = {
+    java_version =
+      {
+        class = 'Standalone,
+        test_deps = [base],
+        cmds = [
+          ["/bin/bash", "-c", "java -version 2>&1 | grep -q 'version \"25'"],
+        ],
+      } | Test,
+
+    javac_compile =
+      {
+        class = 'Standalone,
+        test_deps = [base],
+        cmds = [
+          ["/bin/bash", "-c", "echo 'public class Hi { public static void main(String[] a) { System.out.println(\"ok\"); } }' > Hi.java"],
+          ["/bin/javac", "Hi.java"],
+          ["/bin/bash", "-c", "java Hi | grep -q '^ok$'"],
+        ],
+      } | Test,
+  },
+} | BuildSpec
@@ -0,0 +1,23 @@
+#!/bin/sh
+set -ex
+
+case $(uname -m) in
+  x86_64)  PLATFORM="x64" ;;
+  aarch64) PLATFORM="aarch64" ;;
+  *)       echo "unsupported architecture: $(uname -m)" >&2; exit 1 ;;
+esac
+
+tar -xof "OpenJDK25U-jdk_${PLATFORM}_linux_hotspot_${MINIMAL_ARG_VERSION}_${MINIMAL_ARG_BUILD_NUM}.tar.gz"
+cd "jdk-${MINIMAL_ARG_VERSION}+${MINIMAL_ARG_BUILD_NUM}"
+
+mkdir -p $OUTPUT_DIR/usr/{bin,lib/jvm}
+
+# Install the JDK
+cp -r . $OUTPUT_DIR/usr/lib/jvm/
+
+# Put every JDK tool on PATH (jdb, jcmd, jfr, jstack, jmap, javap, jdeps,
+# javadoc, ... -- not just the eight that used to be listed here).
+for path in "$OUTPUT_DIR"/usr/lib/jvm/bin/*; do
+    bin=$(basename "$path")
+    ln -sv "../lib/jvm/bin/$bin" "$OUTPUT_DIR/usr/bin/$bin"
+done
@@ -1,91 +1,14 @@
-let { Attrs, BuildSpec, Local, OutputBin, OutputData, OutputLib, Source, Test, .. } = import "minimal.ncl" in
-let { target, .. } = import "config.ncl" in
-let base = import "../base/build.ncl" in
-let alsa-lib = import "../alsa-lib/build.ncl" in
-let glibc = import "../glibc/build.ncl" in
-let zlib = import "../zlib/build.ncl" in
-
-let version = "21.0.12.1" in
-let build_num = "1" in
-let dl_base = "https://github.com/adoptium/temurin21-binaries/releases/download/jdk-%{version}+%{build_num}" in
-
-let { amd64_sha256, arm64_sha256 } = {
-  amd64_sha256 = "ce79869e1307ed8ee1e2baa86a412b1eb5b75d10a01006d788a6f968bcfaee94",
-  arm64_sha256 = "23e37e026f12f3e706f18938ff611db3032d075b09d0879a25d06718c773e223",
-}
-in
-
+let { BuildSpec, .. } = import "minimal.ncl" in
+let jdk-25 = import "../jdk-25/build.ncl" in
+# `jdk` is the CURRENT Java LTS: a meta-package over the versioned line
+# (same shape as `toolchain`). Projects that need a specific line depend on
+# jdk-21 / jdk-25 / jdk-27 directly; when the next LTS lands, this one moves.
 {
   name = "jdk",
-  build_deps = [
-    { file = "build.sh" } | Local,
-    match {
-      { arch = 'Amd64, .. } =>
-        {
-          url = "%{dl_base}/OpenJDK21U-jdk_x64_linux_hotspot_%{version}_%{build_num}.tar.gz",
-          sha256 = amd64_sha256,
-        } | Source,
-      { arch = 'Arm64, .. } =>
-        {
-          url = "%{dl_base}/OpenJDK21U-jdk_aarch64_linux_hotspot_%{version}_%{build_num}.tar.gz",
-          sha256 = arm64_sha256,
-        } | Source,
-    } target,
-    base,
-  ],
+  build_deps = [],
   runtime_deps = [
-    alsa-lib,
-    glibc,
-    zlib,
+    jdk-25,
   ],
-
-  cmd = "./build.sh",
-  build_args = {
-    include version,
-    include build_num,
-  },
-
-  outputs = {
-    bins = { glob = "usr/bin/*" } | OutputBin,
-
-    jvm_bins = { glob = "usr/lib/jvm/bin/*" } | OutputBin,
-    jvm_libs = { glob = "usr/lib/jvm/lib/**/*.so*" } | OutputLib,
-    jvm_libdata = { glob = "usr/lib/jvm/lib/**", allow_executable = true } | OutputData,
-
-    jvm_data = { glob = "usr/lib/jvm/{jmod,conf,legal}/**" } | OutputData,
-    jvm_includes = { glob = "usr/lib/jvm/include/**" } | OutputData,
-  },
-
-  attrs =
-    {
-      upstream_version = version,
-      license_spdx = "GPL-2.0-only WITH Classpath-exception-2.0",
-      source_provenance = {
-        category = 'GithubRepo,
-        owner = "adoptium",
-        repo = "temurin21-binaries",
-      },
-    } | Attrs,
-
-  tests = {
-    java_version =
-      {
-        class = 'Standalone,
-        test_deps = [base],
-        cmds = [
-          ["/bin/bash", "-c", "java -version 2>&1 | grep -q '21'"],
-        ],
-      } | Test,
-
-    javac_compile =
-      {
-        class = 'Standalone,
-        test_deps = [base],
-        cmds = [
-          ["/bin/bash", "-c", "echo 'public class Hi { public static void main(String[] a) { System.out.println(\"ok\"); } }' > Hi.java"],
-          ["/bin/javac", "Hi.java"],
-          ["/bin/bash", "-c", "java Hi | grep -q '^ok$'"],
-        ],
-      } | Test,
-  },
+  cmd = "",
+  outputs = {},
 } | BuildSpec
@@ -1,8 +1,10 @@
 let { stack, .. } = import "minimal.ncl" in
 stack {
  name = "gradle",
-  build_packages = ["gradle", "jdk", "base", "curl"],
-  runtime_packages = ["jdk"],
+  # Pinned to the current LTS line (jdk-25), not the `jdk` meta, so a project's
+  # Java does not move when the meta next rolls to a new LTS.
+  build_packages = ["gradle", "jdk-25", "base", "curl"],
+  runtime_packages = ["jdk-25"],
   build_env_vars = {
     JAVA_HOME = "/usr/lib/jvm",
   },
@@ -15,5 +17,12 @@ stack {
     {
       file_regexes."settings.gradle" = "*",
     },
+    # Kotlin DSL: `gradle init`'s default since Gradle 8.2.
+    {
+      file_regexes."build.gradle.kts" = "*",
+    },
+    {
+      file_regexes."settings.gradle.kts" = "*",
+    },
   ],
 }
@@ -1,8 +1,10 @@
 let { stack, .. } = import "minimal.ncl" in
 stack {
   name = "maven",
-  build_packages = ["maven", "jdk", "base", "curl"],
-  runtime_packages = ["jdk"],
+  # Pinned to the current LTS line (jdk-25), not the `jdk` meta, so a project's
+  # Java does not move when the meta next rolls to a new LTS.
+  build_packages = ["maven", "jdk-25", "base", "curl"],
+  runtime_packages = ["jdk-25"],
   build_env_vars = {
     JAVA_HOME = "/usr/lib/jvm",
     MAVEN_OPTS = "-Dmaven.repo.local=/state/m2/repository",