phoebus-olog: build using buildMavenPackage function

makes the packaging much simpler

also use 'jre' instead of 'jdk' for running it, which makes the package
smaller

pkgs/epnix/tools/phoebus/olog/default.nix

@@ -1,103 +1,52 @@
 {
   lib,
   epnixLib,
-  stdenv,
   fetchFromGitHub,
+  jre,
   maven,
-  libfaketime,
-  canonicalize-jars-hook,
-  jdk,
-  git,
   makeWrapper,
-}: let
-  # TODO: upstream outputTimestamp
-  buildDate = "2022-02-24T07:56:00Z";
-  mvnOptions = "-Dmaven.javadoc.skip=true -Dmaven.source.skip=true -Pdeployable-jar -Dproject.build.outputTimestamp=${buildDate}";
-in
-  stdenv.mkDerivation (final: {
-    pname = "phoebus-olog";
-    version = "4.7.3";
-
-    src = fetchFromGitHub {
-      owner = "Olog";
-      repo = "phoebus-olog";
-      rev = "v${final.version}";
-      hash = "sha256-WwRB4QtZBeH6GptTZJ02CBpP7BGzjZbwMYQrOmGevFo=";
-    };
-
-    deps = stdenv.mkDerivation {
-      name = with final; "${pname}-${version}-deps";
-      inherit (final) src;
-
-      nativeBuildInputs = [jdk maven git];
-
-      buildPhase = ''
-        runHook preBuild
-
-        # Don't use the launch script, we use the jar file as a jar
-        mvn package ${mvnOptions} -Dmaven.repo.local=$out
-
-        runHook postBuild
-      '';
-
-      # keep only *.{pom,jar,sha1,nbm} and delete all ephemeral files with
-      # lastModified timestamps inside
-      installPhase = ''
-        runHook preInstall
-
-        find $out -type f \
-          -name \*.lastUpdated -or \
-          -name resolver-status.properties -or \
-          -name _remote.repositories \
-          -delete
-
-        runHook postInstall
-      '';
-
-      outputHashAlgo = "sha256";
-      outputHashMode = "recursive";
-      outputHash = "sha256-40n06R2KBuuzqvVq1bWsd1jjQtcNQfK/4RbgtFmxTf8=";
-
-      doCheck = false;
-    };
-
-    nativeBuildInputs = [maven makeWrapper libfaketime];
-
-    buildPhase = ''
-      runHook preBuild
-
-      # Use faketime because files inside the jar have an mtime
-      faketime -f "1970-01-01 00:00:01" mvn package --offline ${mvnOptions} -Dmaven.repo.local="$deps"
-
-      runHook postBuild
-    '';
-
-    installPhase = ''
-      runHook preInstall
-
-      mkdir -p $out/bin
-      mkdir -p $out/share/java
-
-      jarName="service-olog-${final.version}.jar"
-
-      classpath=$(find $deps -name "*.jar" -printf ':%h/%f');
-      install -Dm644 target/service-olog-4.7.3.jar $out/share/java
-      # Strip the script at the beginning of the jar, so that we are able to
-      # canonicalize it
-      sed -i '1,/^exit 0$/d' $out/share/java/$jarName
-
-      makeWrapper ${jdk}/bin/java $out/bin/${final.pname} \
-        --add-flags "-classpath ''${classpath#:}" \
-        --add-flags "-jar $out/share/java/$jarName"
-
-      runHook postInstall
-    '';
-
-    meta = {
-      description = "Online logbook for experimental and industrial logging";
-      homepage = "https://olog.readthedocs.io/en/latest/";
-      license = lib.licenses.epl10;
-      maintainers = with epnixLib.maintainers; [minijackson];
-      inherit (jdk.meta) platforms;
-    };
-  })
+}:
+maven.buildMavenPackage rec {
+  pname = "phoebus-olog";
+  version = "4.7.3";
+
+  src = fetchFromGitHub {
+    owner = "Olog";
+    repo = "phoebus-olog";
+    rev = "v${version}";
+    hash = "sha256-WwRB4QtZBeH6GptTZJ02CBpP7BGzjZbwMYQrOmGevFo=";
+  };
+
+  mvnHash = "sha256-D1n5PfGulIgdjd60mChVLH1kQDOUcc/TvEw3oJUZ1h4=";
+  mvnParameters = "-Dmaven.javadoc.skip=true -Dmaven.source.skip=true -Pdeployable-jar -Dproject.build.outputTimestamp=1980-01-01T00:00:02Z";
+
+  nativeBuildInputs = [makeWrapper];
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+    mkdir -p $out/share/java
+
+    jarName="service-olog-${version}.jar"
+
+    install -Dm644 target/service-olog-4.7.3.jar $out/share/java
+    # Strip the script at the beginning of the jar, so that we are able to
+    # canonicalize it
+    sed -i '1,/^exit 0$/d' $out/share/java/$jarName
+
+    makeWrapper ${lib.getExe jre} $out/bin/${meta.mainProgram} \
+      --add-flags "-jar $out/share/java/$jarName"
+
+    runHook postInstall
+  '';
+
+  meta = {
+    description = "Online logbook for experimental and industrial logging";
+    homepage = "https://olog.readthedocs.io/en/latest/";
+    mainProgram = "phoebus-olog";
+    license = lib.licenses.epl10;
+    maintainers = with epnixLib.maintainers; [minijackson];
+    inherit (jre.meta) platforms;
+  };
+}