Meson: init at 0.60.2

pkgs/development/tools/build-managers/meson/default.nix → pkgs/development/tools/build-managers/meson/0.57/default.nix

@@ -1,6 +1,5 @@
 { lib
 , python3
-
 , writeTextDir
 , substituteAll
 , fetchpatch

pkgs/development/tools/build-managers/meson/0.60/allow-dirs-outside-of-prefix.patch

@@ -0,0 +1,19 @@
+--- a/mesonbuild/coredata.py
++++ b/mesonbuild/coredata.py
+@@ -506,7 +506,6 @@ class CoreData:
+             return value
+         if option.name.endswith('dir') and value.is_absolute() and \
+            option not in BULITIN_DIR_NOPREFIX_OPTIONS:
+-            # Value must be a subdir of the prefix
+             # commonpath will always return a path in the native format, so we
+             # must use pathlib.PurePath to do the same conversion before
+             # comparing.
+@@ -518,7 +517,7 @@ class CoreData:
+             try:
+                 value = value.relative_to(prefix)
+             except ValueError:
+-                raise MesonException(msg.format(option, value, prefix))
++                pass
+             if '..' in str(value):
+                 raise MesonException(msg.format(option, value, prefix))
+         return value.as_posix()

pkgs/development/tools/build-managers/meson/0.60/boost-Do-not-add-system-paths-on-nix.patch

@@ -0,0 +1,21 @@
+diff -Naur meson-0.60.2-old/mesonbuild/dependencies/boost.py meson-0.60.2-new/mesonbuild/dependencies/boost.py
+--- meson-0.60.2-old/mesonbuild/dependencies/boost.py	2021-11-02 16:58:07.000000000 -0300
++++ meson-0.60.2-new/mesonbuild/dependencies/boost.py	2021-12-12 19:21:27.895705897 -0300
+@@ -682,16 +682,7 @@
+         else:
+             tmp = []  # type: T.List[Path]
+
+-            # Add some default system paths
+-            tmp += [Path('/opt/local')]
+-            tmp += [Path('/usr/local/opt/boost')]
+-            tmp += [Path('/usr/local')]
+-            tmp += [Path('/usr')]
+-
+-            # Cleanup paths
+-            tmp = [x for x in tmp if x.is_dir()]
+-            tmp = [x.resolve() for x in tmp]
+-            roots += tmp
++            # Remove such spurious, non-explicit "system" paths for Nix&Nixpkgs
+
+         self.check_and_set_roots(roots, use_system=True)
+

pkgs/development/tools/build-managers/meson/0.60/clear-old-rpath.patch

@@ -0,0 +1,20 @@
+diff --git a/mesonbuild/scripts/depfixer.py b/mesonbuild/scripts/depfixer.py
+index 4176b9a03..faaabf616 100644
+--- a/mesonbuild/scripts/depfixer.py
++++ b/mesonbuild/scripts/depfixer.py
+@@ -336,6 +336,15 @@ class Elf(DataSizes):
+         if not new_rpath:
+             self.remove_rpath_entry(entrynum)
+         else:
++            # Clear old rpath to avoid stale references,
++            # not heeding the warning above about de-duplication
++            # since it does not seem to cause issues for us
++            # and not doing so trips up Nix’s reference checker.
++            # See https://github.com/NixOS/nixpkgs/pull/46020
++            # and https://github.com/NixOS/nixpkgs/issues/95163
++            self.bf.seek(rp_off)
++            self.bf.write(b'\0'*len(old_rpath))
++
+             self.bf.seek(rp_off)
+             self.bf.write(new_rpath)
+             self.bf.write(b'\0')

pkgs/development/tools/build-managers/meson/0.60/default.nix

@@ -0,0 +1,109 @@
+{ lib
+, fetchpatch
+, installShellFiles
+, ninja
+, pkg-config
+, python3
+, substituteAll
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "meson";
+  version = "0.60.2";
+
+  src = python3.pkgs.fetchPypi {
+    inherit pname version;
+    hash = "sha256-ZOaWhWW/G4FS9PnWyoFU77nhTKqaq/eyLnHmxdBT6SE=";
+  };
+
+  patches = [
+    # Upstream insists on not allowing bindir and other dir options
+    # outside of prefix for some reason:
+    # https://github.com/mesonbuild/meson/issues/2561
+    # We remove the check so multiple outputs can work sanely.
+    ./allow-dirs-outside-of-prefix.patch
+
+    # Meson is currently inspecting fewer variables than autoconf does, which
+    # makes it harder for us to use setup hooks, etc.  Taken from
+    # https://github.com/mesonbuild/meson/pull/6827
+    ./more-env-vars.patch
+
+    # Unlike libtool, vanilla Meson does not pass any information
+    # about the path library will be installed to to g-ir-scanner,
+    # breaking the GIR when path other than ${!outputLib}/lib is used.
+    # We patch Meson to add a --fallback-library-path argument with
+    # library install_dir to g-ir-scanner.
+    ./gir-fallback-path.patch
+
+    # In common distributions, RPATH is only needed for internal libraries so
+    # meson removes everything else. With Nix, the locations of libraries
+    # are not as predictable, therefore we need to keep them in the RPATH.
+    # At the moment we are keeping the paths starting with /nix/store.
+    # https://github.com/NixOS/nixpkgs/issues/31222#issuecomment-365811634
+    (substituteAll {
+      src = ./fix-rpath.patch;
+      inherit (builtins) storeDir;
+    })
+
+    # When Meson removes build_rpath from DT_RUNPATH entry, it just writes
+    # the shorter NUL-terminated new rpath over the old one to reduce
+    # the risk of potentially breaking the ELF files.
+    # But this can cause much bigger problem for Nix as it can produce
+    # cut-in-half-by-\0 store path references.
+    # Let’s just clear the whole rpath and hope for the best.
+    ./clear-old-rpath.patch
+
+    # Patch out default boost search paths to avoid impure builds on
+    # unsandboxed non-NixOS builds, see:
+    # https://github.com/NixOS/nixpkgs/issues/86131#issuecomment-711051774
+    ./boost-Do-not-add-system-paths-on-nix.patch
+  ];
+
+  setupHook = ./setup-hook.sh;
+
+  # Meson included tests since 0.45, however they fail in Nixpkgs because they
+  # require a typical building environment (including C compiler and stuff).
+  # Just for the sake of documentation, the next lines are maintained here.
+  doCheck = false;
+  checkInputs = [ ninja pkg-config ];
+  checkPhase = ''
+    python ./run_project_tests.py
+  '';
+
+  postFixup = ''
+    pushd $out/bin
+    # undo shell wrapper as meson tools are called with python
+    for i in *; do
+      mv ".$i-wrapped" "$i"
+    done
+    popd
+
+    # Do not propagate Python
+    rm $out/nix-support/propagated-build-inputs
+  '';
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  postInstall = ''
+    installShellCompletion --zsh data/shell-completions/zsh/_meson
+    installShellCompletion --bash data/shell-completions/bash/meson
+  '';
+
+  meta = with lib; {
+    homepage = "https://mesonbuild.com";
+    description = "An open source, fast and friendly build system made in Python";
+    longDescription = ''
+      Meson is an open source build system meant to be both extremely fast, and,
+      even more importantly, as user friendly as possible.
+
+      The main design point of Meson is that every moment a developer spends
+      writing or debugging build definitions is a second wasted. So is every
+      second spent waiting for the build system to actually start compiling
+      code.
+    '';
+    license = licenses.asl20;
+    maintainers = with maintainers; [ jtojnar mbe AndersonTorres ];
+    inherit (python3.meta) platforms;
+  };
+}
+# TODO: a more Nixpkgs-tailoired test suite

pkgs/development/tools/build-managers/meson/0.60/fix-rpath.patch

@@ -0,0 +1,24 @@
+--- a/mesonbuild/backend/backends.py
++++ b/mesonbuild/backend/backends.py
+@@ -456,6 +456,21 @@ class Backend:
+                 args.extend(self.environment.coredata.get_external_link_args(target.for_machine, lang))
+             except Exception:
+                 pass
++
++        nix_ldflags = os.environ.get('NIX_LDFLAGS', '').split()
++        next_is_path = False
++        # Try to add rpaths set by user or ld-wrapper so that they are not removed.
++        # Based on https://github.com/NixOS/nixpkgs/blob/69711a2f5ffe8cda208163be5258266172ff527f/pkgs/build-support/bintools-wrapper/ld-wrapper.sh#L148-L177
++        for flag in nix_ldflags:
++            if flag == '-rpath' or flag == '-L':
++                next_is_path = True
++            elif next_is_path or flag.startswith('-L/'):
++                if flag.startswith('-L/'):
++                    flag = flag[2:]
++                if flag.startswith('@storeDir@'):
++                    dirs.add(flag)
++                next_is_path = False
++
+         # Match rpath formats:
+         # -Wl,-rpath=
+         # -Wl,-rpath,

pkgs/development/tools/build-managers/meson/0.60/gir-fallback-path.patch

@@ -0,0 +1,21 @@
+diff --git a/mesonbuild/modules/gnome.py b/mesonbuild/modules/gnome.py
+index 1c6952df7..9466a0b7d 100644
+--- a/mesonbuild/modules/gnome.py
++++ b/mesonbuild/modules/gnome.py
+@@ -923,6 +923,16 @@ class GnomeModule(ExtensionModule):
+         if fatal_warnings:
+             scan_command.append('--warn-error')
+
++        if len(set(girtarget.get_custom_install_dir()[0] for girtarget in girtargets if girtarget.get_custom_install_dir())) > 1:
++            raise MesonException('generate_gir tries to build multiple libraries with different install_dir at once: {}'.format(','.join([str(girtarget) for girtarget in girtargets])))
++
++        if girtargets[0].get_custom_install_dir():
++            fallback_libpath = girtargets[0].get_custom_install_dir()[0]
++        else:
++            fallback_libpath = None
++        if fallback_libpath is not None and isinstance(fallback_libpath, str) and len(fallback_libpath) > 0 and fallback_libpath[0] == "/":
++            scan_command += ['--fallback-library-path=' + fallback_libpath]
++
+         generated_files = [f for f in libsources if isinstance(f, (GeneratedList, CustomTarget, CustomTargetIndex))]
+
+         scan_target = self._make_gir_target(state, girfile, scan_command, generated_files, depends, kwargs)

pkgs/development/tools/build-managers/meson/0.60/more-env-vars.patch

@@ -0,0 +1,12 @@
+diff -Naur meson-0.60.2-old/mesonbuild/environment.py meson-0.60.2-new/mesonbuild/environment.py
+--- meson-0.60.2-old/mesonbuild/environment.py	2021-11-02 16:58:13.000000000 -0300
++++ meson-0.60.2-new/mesonbuild/environment.py	2021-12-12 17:44:00.350499307 -0300
+@@ -68,7 +68,7 @@
+         # compiling we fall back on the unprefixed host version. This
+         # allows native builds to never need to worry about the 'BUILD_*'
+         # ones.
+-        ([var_name + '_FOR_BUILD'] if is_cross else [var_name]),
++        [var_name + '_FOR_BUILD'] + ([] if is_cross else [var_name]),
+         # Always just the unprefixed host versions
+         [var_name]
+     )[for_machine]

pkgs/development/tools/build-managers/meson/0.60/setup-hook.sh

@@ -0,0 +1,37 @@
+mesonConfigurePhase() {
+    runHook preConfigure
+
+    if [ -z "${dontAddPrefix-}" ]; then
+        mesonFlags="--prefix=$prefix $mesonFlags"
+    fi
+
+    # See multiple-outputs.sh and meson’s coredata.py
+    mesonFlags="\
+        --libdir=${!outputLib}/lib --libexecdir=${!outputLib}/libexec \
+        --bindir=${!outputBin}/bin --sbindir=${!outputBin}/sbin \
+        --includedir=${!outputInclude}/include \
+        --mandir=${!outputMan}/share/man --infodir=${!outputInfo}/share/info \
+        --localedir=${!outputLib}/share/locale \
+        -Dauto_features=${mesonAutoFeatures:-enabled} \
+        -Dwrap_mode=${mesonWrapMode:-nodownload} \
+        $mesonFlags"
+
+    mesonFlags="${crossMesonFlags+$crossMesonFlags }--buildtype=${mesonBuildType:-plain} $mesonFlags"
+
+    echo "meson flags: $mesonFlags ${mesonFlagsArray[@]}"
+
+    meson build $mesonFlags "${mesonFlagsArray[@]}"
+    cd build
+
+    if ! [[ -v enableParallelBuilding ]]; then
+        enableParallelBuilding=1
+        echo "meson: enabled parallel building"
+    fi
+
+    runHook postConfigure
+}
+
+if [ -z "${dontUseMesonConfigure-}" -a -z "${configurePhase-}" ]; then
+    setOutputFlags=
+    configurePhase=mesonConfigurePhase
+fi

pkgs/top-level/all-packages.nix

@@ -3366,7 +3366,9 @@ with pkgs;
 
   merriweather-sans = callPackage ../data/fonts/merriweather-sans { };
 
-  meson = callPackage ../development/tools/build-managers/meson { };
+  # TODO: call a sprintable to deprecate Meson 0.57 as soon as possible
+  meson = callPackage ../development/tools/build-managers/meson/0.57 { };
+  meson_0_60 = callPackage ../development/tools/build-managers/meson/0.60 { };
 
   meson-tools = callPackage ../misc/meson-tools { };