v6.1.9

* Bazel: general improvements.

Improve the Bazel build. Attempt to fix previous errors recorded while
trying to publish ftxui in the Bazel Central Registry:
- https://github.com/bazelbuild/bazel-central-registry/pull/4485
- https://buildkite.com/bazel/bcr-presubmit/builds/13601#01968b61-f5b2-4d16-94d0-c87a03a1a23b

Test against "recent" platforms
-------------------------------

Previously, I got the error:
```
gcc: error: unrecognized command line option '-std-c++20'; did you mean '-std-c++2a'?
```
This was due to using old distribution like ubuntu 2004. Test against
newer platforms only to avoid GCC version<-9.x.y

Downgrade gtest version.
------------------------

I suspect this caused the Bazel Central Registry error:
```
file:///workdir/modules/googletest/1.15.2/MODULE.bazel:68:20: name 'use_repo_rule' is not defined
```
Specifying using bazelmod fixes the issue. Thanks @robinlinden

Tag gtest as dev_dependency
---------------------------

Presumably, this should avoid dependants to fetch it?

Enable --features-layering_check
--------------------------------

Aka clang `-Wprivate-header`. Fix the encountered errors.

Use clang in the CI
-------------------

The CI was defining clang/gcc in the matrix, but was not using it. Fix
the bug.

.bazelrc

@@ -1,2 +1,7 @@
 build --features=layering_check
 build --enable_bzlmod
+
+build --enable_platform_specific_config
+build:linux --cxxopt=-std=c++20
+build:macos --cxxopt=-std=c++20
+build:windows --cxxopt=-std:c++20

.bcr/presubmit.yml

@@ -1,26 +1,36 @@
 matrix:
-  # Note that gcc 9 and earlier aren't supported due to using --std=c++2a
+  bazel:
-  # instead of --std=c++20
+    - 7.x
-  platform:
+    - 8.x
+    - rolling
+  unix_platform:
     - debian11
     - ubuntu2204
     - macos
-  - macos-arm64
+    - macos_arm64
+  win_platform:
     - windows
-  bazel:
+
-  #- 6.x -> Build fails with bazel 6.x
-  - 7.x
-  - 8.x
 tasks:
-  verify_targets:
+
-    name: Build and test.
+  unix_test:
-    platform: ${{ platform }}
+    name: Verify build targets on Unix
+    platform: ${{ unix_platform }}
     bazel: ${{ bazel }}
+    build_flags:
+    - --cxxopt=-std=c++20
     build_targets:
-    - '@ftxui//:ftxui'
-    - '@ftxui//:screen'
     - '@ftxui//:dom'
     - '@ftxui//:component'
-    test_targets:
+    - '@ftxui//:screen'
-    - '@ftxui//:tests'
 
+  windows_test:
+    name: Verify build targets
+    platform: ${{ win_platform }}
+    bazel: ${{ bazel }}
+    build_flags:
+    - --cxxopt=/std:c++20
+    build_targets:
+    - '@ftxui//:dom'
+    - '@ftxui//:component'
+    - '@ftxui//:screen'

BUILD.bazel

@@ -12,7 +12,6 @@
 load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library", "cc_test")
 load(":bazel/ftxui.bzl", "ftxui_cc_library")
 load(":bazel/ftxui.bzl", "generate_examples")
-load(":bazel/ftxui.bzl", "cpp20")
 load(":bazel/ftxui.bzl", "windows_copts")
 load(":bazel/ftxui.bzl", "pthread_linkopts")
 
@@ -258,7 +257,7 @@ cc_test(
         "include",
         "src",
     ],
-    copts = cpp20() + windows_copts(),
+    copts = windows_copts(),
     deps = [
         ":screen",
         ":dom",

CHANGELOG.md

@@ -1,9 +1,20 @@
 Changelog
 =========
 
-Future release
+6.1.9 (2025-05-07)
 ------------
 
+### Build
+If all goes well (pending), ftxui should appear in the Bazel central repository.
+It can be imported into your project using the following lines:
+
+**MODULE.bazel**
+```bazel
+bazel_dep(name = "ftxui", version = "6.1.9")
+```
+
+Thanks @robinlinden and @kcc for the reviews.
+
 ### dom
 - Bugfix: Restore the `dbox` behavior from ftxui 5.0.0. To apply bgcolor
   blending between the two layers, a new `dboxBlend` will be added.
@@ -14,13 +25,6 @@ Future release
 ### Build
 - Feature: Support `bazel` build system. See #1032.
   Proposed by Kostya Serebryany @kcc
-  If all goes well (pending), it should appear in the Bazel central repository.
-  It can be imported into your project using the following lines:
-
-  **MODULE.bazel**
-  ```bazel
-  bazel_dep(name = "ftxui", version = "6.1.8")
-  ```
 
   **BUILD.bazel**
   ```bazel

CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.12)
 
 project(ftxui
   LANGUAGES CXX
-  VERSION 6.1.8
+  VERSION 6.1.9
   DESCRIPTION "C++ Functional Terminal User Interface."
 )
 

MODULE.bazel

@@ -1,7 +1,7 @@
 # FTXUI module.
 module(
     name = "ftxui",
-    version = "6.1.8",
+    version = "6.1.9",
     compatibility_level = 6,
 )
 

README.md

@@ -348,6 +348,7 @@ Feel free to add your projects here:
 - [terminal-rain](https://github.com/Oakamoore/terminal-rain)
 - [keywords](https://github.com/Oakamoore/keywords) ([Play web version :heart:](https://oakamoore.itch.io/keywords))
 - [FTB - tertminal file browser](https://github.com/Cyxuan0311/FTB)
+- [SHOOT!](https://github.com/ShingZhanho/ENGG1340-Project-25Spring)
 
 ### [cpp-best-practices/game_jam](https://github.com/cpp-best-practices/game_jam)
 
@@ -372,7 +373,7 @@ include(FetchContent)
 
 FetchContent_Declare(ftxui
   GIT_REPOSITORY https://github.com/ArthurSonzogni/ftxui
-  GIT_TAG v6.1.8
+  GIT_TAG v6.1.9
 )
 
 FetchContent_GetProperties(ftxui)

bazel/ftxui.bzl

@@ -3,24 +3,6 @@
 load("@rules_cc//cc:defs.bzl", "cc_library")
 load("@rules_cc//cc:defs.bzl", "cc_binary")
 
-def cpp17():
-    return select({
-        "@rules_cc//cc/compiler:msvc-cl": ["/std:c++17"],
-        "@rules_cc//cc/compiler:clang-cl": ["/std:c++17"],
-        "@rules_cc//cc/compiler:clang": ["-std=c++17"],
-        "@rules_cc//cc/compiler:gcc": ["-std=c++17"],
-        "//conditions:default": ["-std=c++17"],
-    })
-
-def cpp20():
-    return select({
-        "@rules_cc//cc/compiler:msvc-cl": ["/std:c++20"],
-        "@rules_cc//cc/compiler:clang-cl": ["/std:c++20"],
-        "@rules_cc//cc/compiler:clang": ["-std=c++20"],
-        "@rules_cc//cc/compiler:gcc": ["-std=c++20"],
-        "//conditions:default": ["-std=c++20"],
-    })
-
 # Microsoft terminal is a bit buggy ¯\_(ツ)_/¯ and MSVC uses bad defaults.
 def windows_copts():
     MSVC_COPTS = [
@@ -90,7 +72,7 @@ def ftxui_cc_library(
             "include",
             "src",
         ],
-        copts = cpp17() + windows_copts(),
+        copts = windows_copts(),
         visibility = ["//visibility:public"],
     )
 
@@ -118,5 +100,5 @@ def generate_examples():
               ":dom",
               ":screen",
             ],
-            copts = cpp20() + windows_copts(),
+            copts = windows_copts(),
         )

tools/test_bazel.sh

@@ -1,14 +1,8 @@
 # This script tests the project with different versions of Bazel and compilers
 # locally. This avoids waiting on the CI to run the tests.
 
-# Version
-# -------
-# - Version >= 7 are supported
-# - Version <= 6 fail with the error:
-#   Error:
-#     external/googletest~1.14.0.bcr.1/googletest/include/gtest/internal/gtest-port.h:279:2:
-#     error: #error C++ versions less than C++14 are not supported.
 for ver in \
+  "6.0.0" \
   "7.0.0" \
   "8.0.0"
 do