lttng-ust: Migrate to by-name

pkgs/by-name/lt/lttng-ust/package.nix

@@ -1,5 +1,3 @@
-{ version, sha256 }:
-
 {
   lib,
   stdenv,
@@ -23,11 +21,11 @@
 
 stdenv.mkDerivation rec {
   pname = "lttng-ust";
-  inherit version;
+  version = "2.13.8";
 
   src = fetchurl {
     url = "https://lttng.org/files/lttng-ust/${pname}-${version}.tar.bz2";
-    inherit sha256;
+    sha256 = "sha256-1O+Y2rmjetT1JMyv39UK9PJmA5tSjdWvq8545JAk2Tc=";
   };
 
   outputs = [

pkgs/by-name/lt/lttng-ust_2_12/package.nix

@@ -0,0 +1,69 @@
+{
+  lib,
+  stdenv,
+  fetchurl,
+  pkg-config,
+  liburcu,
+  numactl,
+  python3,
+}:
+
+# NOTE:
+#   ./configure ...
+#   [...]
+#   LTTng-UST will be built with the following options:
+#
+#   Java support (JNI): Disabled
+#   sdt.h integration:  Disabled
+#   [...]
+#
+# Debian builds with std.h (systemtap).
+
+stdenv.mkDerivation rec {
+  pname = "lttng-ust";
+  version = "2.12.2";
+
+  src = fetchurl {
+    url = "https://lttng.org/files/lttng-ust/${pname}-${version}.tar.bz2";
+    sha256 = "sha256-vNDwZLbKiMcthOdg6sNHKuXIKEEcY0Q1kivun841n8c=";
+  };
+
+  outputs = [
+    "bin"
+    "out"
+    "dev"
+    "devdoc"
+  ];
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [
+    numactl
+    python3
+  ];
+
+  preConfigure = ''
+    patchShebangs .
+  '';
+
+  hardeningDisable = [ "trivialautovarinit" ];
+
+  configureFlags = [ "--disable-examples" ];
+
+  propagatedBuildInputs = [ liburcu ];
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    description = "LTTng Userspace Tracer libraries";
+    mainProgram = "lttng-gen-tp";
+    homepage = "https://lttng.org/";
+    license = with licenses; [
+      lgpl21Only
+      gpl2Only
+      mit
+    ];
+    platforms = lib.intersectLists platforms.linux liburcu.meta.platforms;
+    maintainers = [ maintainers.bjornfor ];
+  };
+
+}

pkgs/development/tools/misc/lttng-ust/2.12.nix

@@ -1,4 +0,0 @@
-import ./generic.nix {
-  version = "2.12.2";
-  sha256 = "sha256-vNDwZLbKiMcthOdg6sNHKuXIKEEcY0Q1kivun841n8c=";
-}

pkgs/development/tools/misc/lttng-ust/default.nix

@@ -1,4 +0,0 @@
-import ./generic.nix {
-  version = "2.13.8";
-  sha256 = "sha256-1O+Y2rmjetT1JMyv39UK9PJmA5tSjdWvq8545JAk2Tc=";
-}

pkgs/top-level/all-packages.nix

@@ -8536,10 +8536,6 @@ with pkgs;
 
   lit = with python3Packages; toPythonApplication lit;
 
-  lttng-ust = callPackage ../development/tools/misc/lttng-ust { };
-
-  lttng-ust_2_12 = callPackage ../development/tools/misc/lttng-ust/2.12.nix { };
-
   massif-visualizer = libsForQt5.callPackage ../development/tools/analysis/massif-visualizer { };
 
   maven3 = maven;