[fractal/fractal-next] meson: Drop build shell script

[Julian Sparber <jsparber src gnome org>]

commit c6e25f4fbf5de5dee685b1308e16c50c5e06bca2
Author: Julian Sparber <julian sparber net>
Date:   Wed Jan 19 16:05:07 2022 +0100

    meson: Drop build shell script
    
    This drops the script we used to build fractal. And uses know only
    meson. This also drops the need for specifying sources since cargo does
    that for us.
    
    This also bumps the meson version.
    This also drops the build option `skip-cargo-build`.
    
    Most of the changes are comming from https://gitlab.gnome.org/World/pika-backup

 build-aux/cargo.sh |  21 --------
 meson.build        |   9 ++--
 meson_options.txt  |   4 --
 src/meson.build    | 137 ++++++++++-------------------------------------------
 4 files changed, 28 insertions(+), 143 deletions(-)
---
diff --git a/meson.build b/meson.build
index 4506067e..851b600c 100644
--- a/meson.build
+++ b/meson.build
@@ -2,7 +2,7 @@ project('fractal',
         'rust',
         version: '0.0.1',
         license: 'MIT',
-  meson_version: '>= 0.53')
+  meson_version: '>= 0.57')
 
 i18n = import('i18n')
 gnome = import('gnome')
@@ -32,7 +32,6 @@ glib_compile_schemas = find_program('glib-compile-schemas', required: true)
 desktop_file_validate = find_program('desktop-file-validate', required: false)
 appstream_util = find_program('appstream-util', required: false)
 cargo = find_program('cargo', required: true)
-cargo_script = find_program('build-aux/cargo.sh')
 
 version = meson.project_version()
 version_array = version.split('.')
@@ -47,7 +46,7 @@ localedir = prefix / get_option('localedir')
 datadir = prefix / get_option('datadir')
 pkgdatadir = datadir / meson.project_name()
 iconsdir = datadir / 'icons'
-podir = meson.source_root() / 'po'
+podir = meson.project_source_root() / 'po'
 gettext_package = meson.project_name()
 
 if get_option('profile') == 'development'
@@ -67,8 +66,8 @@ endif
 
 meson.add_dist_script(
   'build-aux/dist-vendor.sh',
-  meson.build_root() / 'meson-dist' / meson.project_name() + '-' + version,
-  meson.source_root()
+  meson.project_build_root() / 'meson-dist' / meson.project_name() + '-' + version,
+  meson.project_source_root()
 )
 
 if get_option('profile') == 'development'
diff --git a/meson_options.txt b/meson_options.txt
index ea7fd89a..35af6dbc 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -8,7 +8,3 @@ option(
   value: 'default',
   description: 'The build profile for Fractal. One of "default" or "development".'
 )
-option(
-  'skip-cargo-build', type: 'boolean', value: false,
-  description: 'Skip building "cargo-build" target.'
-)
diff --git a/src/meson.build b/src/meson.build
index 72ba437d..d99036d6 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -13,129 +13,40 @@ config = configure_file(
 # Copy the config.rs output to the source directory.
 run_command(
   'cp',
-  meson.build_root() / 'src' / 'config.rs',
-  meson.source_root() / 'src' / 'config.rs',
+  meson.project_build_root() / 'src' / 'config.rs',
+  meson.project_source_root() / 'src' / 'config.rs',
   check: true
 )
 
-sources = files(
-  'application.rs',
-  'contrib/qr_code.rs',
-  'contrib/qr_code_scanner/camera_paintable.rs',
-  'contrib/qr_code_scanner/mod.rs',
-  'contrib/qr_code_scanner/screenshot.rs',
-  'contrib/qr_code_scanner/qr_code_detector.rs',
-  'components/avatar.rs',
-  'components/auth_dialog.rs',
-  'components/badge.rs',
-  'components/context_menu_bin.rs',
-  'components/custom_entry.rs',
-  'components/label_with_widgets.rs',
-  'components/mod.rs',
-  'components/pill.rs',
-  'components/room_title.rs',
-  'components/in_app_notification.rs',
-  'components/spinner_button.rs',
-  'components/loading_listbox_row.rs',
-  'components/video_player.rs',
-  'config.rs',
-  'error.rs',
-  'main.rs',
-  'window.rs',
-  'login.rs',
-  'secret.rs',
-  'user_facing_error.rs',
-  'utils.rs',
-  'session/avatar.rs',
-  'session/event_source_dialog.rs',
-  'session/account_settings/devices_page/device.rs',
-  'session/account_settings/devices_page/device_row.rs',
-  'session/account_settings/devices_page/device_list.rs',
-  'session/account_settings/devices_page/mod.rs',
-  'session/account_settings/mod.rs',
-  'session/user.rs',
-  'session/mod.rs',
-  'session/content/explore/mod.rs',
-  'session/content/explore/public_room.rs',
-  'session/content/explore/public_room_list.rs',
-  'session/content/explore/public_room_row.rs',
-  'session/content/invite.rs',
-  'session/content/markdown_popover.rs',
-  'session/content/room_history/divider_row.rs',
-  'session/content/room_history/item_row.rs',
-  'session/content/room_history/message_row/file.rs',
-  'session/content/room_history/message_row/media.rs',
-  'session/content/room_history/message_row/mod.rs',
-  'session/content/room_history/message_row/text.rs',
-  'session/content/room_history/mod.rs',
-  'session/content/room_history/state_row/creation.rs',
-  'session/content/room_history/state_row/mod.rs',
-  'session/content/room_history/state_row/tombstone.rs',
-  'session/content/room_history/verification_info_bar.rs',
-  'session/content/mod.rs',
-  'session/content/room_details/invite_subpage/invitee.rs',
-  'session/content/room_details/invite_subpage/mod.rs',
-  'session/content/room_details/invite_subpage/invitee_list.rs',
-  'session/content/room_details/invite_subpage/invitee_row.rs',
-  'session/content/room_details/member_page/mod.rs',
-  'session/content/room_details/member_page/member_row.rs',
-  'session/content/room_details/member_page/member_menu.rs',
-  'session/content/room_details/mod.rs',
-  'session/content/verification/emoji.rs',
-  'session/content/verification/mod.rs',
-  'session/content/verification/identity_verification_widget.rs',
-  'session/content/verification/session_verification.rs',
-  'session/media_viewer.rs',
-  'session/room/event.rs',
-  'session/room/event_actions.rs',
-  'session/room/highlight_flags.rs',
-  'session/room/item.rs',
-  'session/room/member.rs',
-  'session/room/member_list.rs',
-  'session/room/member_role.rs',
-  'session/room/mod.rs',
-  'session/room/power_levels.rs',
-  'session/room/room_type.rs',
-  'session/room_list.rs',
-  'session/room/timeline.rs',
-  'session/room_creation/mod.rs',
-  'session/sidebar/item_list.rs',
-  'session/sidebar/category.rs',
-  'session/sidebar/category_row.rs',
-  'session/sidebar/mod.rs',
-  'session/sidebar/row.rs',
-  'session/sidebar/room_row.rs',
-  'session/sidebar/entry.rs',
-  'session/sidebar/entry_row.rs',
-  'session/sidebar/entry_type.rs',
-  'session/sidebar/verification_row.rs',
-  'session/sidebar/selection.rs',
-  'session/sidebar/account_switcher/add_account.rs',
-  'session/sidebar/account_switcher/avatar_with_selection.rs',
-  'session/sidebar/account_switcher/item.rs',
-  'session/sidebar/account_switcher/mod.rs',
-  'session/sidebar/account_switcher/user_entry.rs',
-  'session/sidebar/category_type.rs',
-  'session/verification/mod.rs',
-  'session/verification/identity_verification.rs',
-  'session/verification/verification_list.rs',
-)
+cargo_options = [ '--manifest-path', meson.project_source_root() / 'Cargo.toml' ]
+cargo_options += [ '--target-dir', meson.project_build_root() / 'src' ]
+
+if get_option('profile') == 'default'
+  cargo_options += [ '--release' ]
+  rust_target = 'release'
+  message('Building in release mode')
+else
+  rust_target = 'debug'
+  message('Building in debug mode')
+endif
+
+cargo_env = [ 'CARGO_HOME=' + meson.project_build_root() / 'cargo-home' ]
 
-custom_target(
+cargo_build = custom_target(
   'cargo-build',
-  build_by_default: not get_option('skip-cargo-build'),
-  input: sources,
+  build_by_default: true,
+  build_always_stale: true,
   output: meson.project_name(),
   console: true,
   install: true,
   install_dir: bindir,
   depends: resources,
   command: [
-    cargo_script,
-    meson.build_root(),
-    meson.source_root(),
-    '@OUTPUT@',
-    profile,
-    meson.project_name(),
+    'env',
+    cargo_env,
+    cargo, 'build',
+    cargo_options,
+    '&&',
+    'cp', 'src' / rust_target / meson.project_name(), '@OUTPUT@',
   ]
 )