ci: move BSD jobs from sourcehut to Cirrus CI #19616

dispatch.sr.ht is being deprecated, meaning that using sourcehut CI
won't be possible (see https://github.com/neovim/neovim/issues/19609).
Since Github Actions doesn't provide any BSD runners an external service
is required and Cirrus CI seems like a good replacement for sourcehut.

Initially experimented with using FreeBSD and OpenBSD virtual machines
in GitHub Actions, but Cirrus has been a much better fit with better
performance, logs and overall experience.

Failing tests are automatically skipped on FreeBSD regardless if it's on
CI or not. Ideally these tests should only be skipped in CI with the
help of `isCI` helper function. Unfortunately, the tests don't recognize
the environment variable CIRRUS_CI even if it's set manually. This
workaround is good enough for the time being, but we might want to only
skip tests when using the CI (or even better, fix the failing tests).

Closes: https://github.com/neovim/neovim/issues/19609

9 files changed, 56 insertions, 113 deletions

diff --git a/.builds/freebsd.yml b/.builds/freebsd.yml
deleted file mode 100644
index 4be49fd153..0000000000
--- a/.builds/freebsd.yml
+++ /dev/null
@@ -1,45 +0,0 @@
-image: freebsd/latest
-
-packages:
-- cmake
-- gmake
-- ninja
-- libtool
-- automake
-- pkgconf
-- unzip
-- wget
-- gettext
-- python
-- libffi
-- gdb
-
-sources:
-- https://github.com/neovim/neovim
-
-environment:
-  SOURCEHUT: 1
-  LANG: en_US.UTF-8
-  CMAKE_EXTRA_FLAGS: -DCI_BUILD=ON -DMIN_LOG_LEVEL=3
-
-tasks:
-- should-run: |
-    if ! git -C neovim diff --name-only HEAD^! | grep -E -v "^(.github|runtime/doc/.*)" >/dev/null; then
-      echo "Skipping build because only ignored files were changed"
-      complete-build
-    fi
-- build-deps: |
-    cd neovim
-    gmake deps
-- build: |
-    cd neovim
-    gmake CMAKE_BUILD_TYPE=RelWithDebInfo CMAKE_EXTRA_FLAGS="${CMAKE_EXTRA_FLAGS}" nvim
-- functionaltest: |
-    cd neovim
-    gmake functionaltest
-- unittest: |
-    cd neovim
-    gmake unittest
-- oldtest: |
-    cd neovim
-    gmake oldtest
diff --git a/.builds/openbsd.yml b/.builds/openbsd.yml
deleted file mode 100644
index b5799e424b..0000000000
--- a/.builds/openbsd.yml
+++ /dev/null
@@ -1,49 +0,0 @@
-# sourcehut CI: https://builds.sr.ht/~jmk/neovim
-
-image: openbsd/latest
-
-packages:
-- autoconf-2.71
-- automake-1.16.3
-- cmake
-- gettext-runtime
-- gettext-tools
-- gmake
-- libtool
-- ninja
-- unzip-6.0p14
-- gdb
-
-sources:
-- https://github.com/neovim/neovim
-
-environment:
-  SOURCEHUT: 1
-  LC_CTYPE: en_US.UTF-8
-  CMAKE_EXTRA_FLAGS: -DCI_BUILD=ON -DMIN_LOG_LEVEL=3
-
-tasks:
-- should-run: |
-    if ! git -C neovim diff --name-only HEAD^! | grep -E -v "^(.github|runtime/doc/.*)" >/dev/null; then
-      echo "Skipping build because only ignored files were changed"
-      complete-build
-    fi
-- build-deps: |
-    export AUTOCONF_VERSION=2.71
-    export AUTOMAKE_VERSION=1.16
-    mkdir neovim/.deps
-    cd neovim/.deps
-    cmake -G Ninja ../cmake.deps/
-    cmake --build . --config RelWithDebInfo
-- build: |
-    mkdir neovim/build
-    cd neovim/build
-    cmake -G Ninja $CMAKE_EXTRA_FLAGS ..
-    cmake --build . --config RelWithDebInfo
-    ./bin/nvim --version
-- functionaltest: |
-    cd neovim/build
-    cmake --build . --config RelWithDebInfo --target functionaltest
-- oldtest: |
-    cd neovim
-    gmake oldtest
diff --git a/.cirrus.yml b/.cirrus.yml
new file mode 100644
index 0000000000..af67170235
--- /dev/null
+++ b/.cirrus.yml
@@ -0,0 +1,29 @@
+env:
+  CIRRUS_CLONE_DEPTH: '1'
+  LANG: en_US.UTF-8
+  CMAKE_EXTRA_FLAGS: -DCI_BUILD=ON -DMIN_LOG_LEVEL=3
+
+freebsd_task:
+  name: FreeBSD
+  only_if: $BRANCH != "master"
+  freebsd_instance:
+    image_family: freebsd-13-1
+  timeout_in: 30m
+  install_script:
+    - pkg update -f
+    - pkg install -y cmake gmake ninja libtool automake pkgconf unzip wget gettext python libffi git
+  build_deps_script:
+    - gmake deps
+  build_script:
+    - gmake CMAKE_EXTRA_FLAGS="${CMAKE_EXTRA_FLAGS}" nvim
+  workaround_script:
+    # Run tests as user "cirrus" instead of root. This is required for the
+    # permission-related tests to work correctly.
+    - pw useradd cirrus -m
+    - chown -R cirrus:cirrus .
+  functionaltest_script:
+    - sudo -u cirrus gmake functionaltest
+  unittest_script:
+    - sudo -u cirrus gmake unittest
+  oldtest_script:
+    - sudo -u cirrus gmake oldtest
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 558d0986db..b3adf13318 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -111,7 +111,7 @@ the VCS/git logs more valuable. The general structure of a commit message is:
 
 ### Automated builds (CI)
 
-Each pull request must pass the automated builds on [sourcehut] and [GitHub Actions].
+Each pull request must pass the automated builds on [Cirrus CI] and [GitHub Actions].
 
 - CI builds are compiled with [`-Werror`][gcc-warnings], so compiler warnings
   will fail the build.
@@ -125,20 +125,7 @@ Each pull request must pass the automated builds on [sourcehut] and [GitHub Acti
 - The [lint](#lint) build checks modified lines _and their immediate
   neighbors_, to encourage incrementally updating the legacy style to meet our
   [style](#style). (See [#3174][3174] for background.)
-- CI for freebsd and openbsd runs on [sourcehut].
-    - To get a backtrace on freebsd (after connecting via ssh):
-      ```sh
-      sudo pkg install tmux  # If you want tmux.
-      lldb build/bin/nvim -c nvim.core
-
-      # To get a full backtrace:
-      #   1. Rebuild with debug info.
-      rm -rf nvim.core build
-      gmake CMAKE_BUILD_TYPE=RelWithDebInfo CMAKE_EXTRA_FLAGS="-DCI_BUILD=ON -DMIN_LOG_LEVEL=3" nvim
-      #   2. Run the failing test to generate a new core file.
-      TEST_FILE=test/functional/foo.lua gmake functionaltest
-      lldb build/bin/nvim -c nvim.core
-      ```
+- CI for FreeBSD runs on [Cirrus CI].
 
 ### Clang scan-build
 
@@ -321,6 +308,7 @@ as context, use the `-W` argument as well.
 [1820]: https://github.com/neovim/neovim/pull/1820
 [3174]: https://github.com/neovim/neovim/issues/3174
 [ASan]: http://clang.llvm.org/docs/AddressSanitizer.html
+[Cirrus CI]: https://cirrus-ci.com/github/neovim/neovim
 [Clang report]: https://neovim.io/doc/reports/clang/
 [GitHub Actions]: https://github.com/neovim/neovim/actions
 [clangd]: https://clangd.llvm.org
@@ -345,7 +333,6 @@ as context, use the `-W` argument as well.
 [pr-ready]: https://docs.github.com/en/github/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-stage-of-a-pull-request
 [review-checklist]: https://github.com/neovim/neovim/wiki/Code-review-checklist
 [run-tests]: https://github.com/neovim/neovim/blob/master/test/README.md#running-tests
-[sourcehut]: https://builds.sr.ht/~jmk
 [style-guide]: https://neovim.io/doc/user/dev_style.html#dev-style
 [uncrustify]: http://uncrustify.sourceforge.net/
 [wiki-contribute-help]: https://github.com/neovim/neovim/wiki/contribute-%3Ahelp
diff --git a/test/functional/api/server_notifications_spec.lua b/test/functional/api/server_notifications_spec.lua
index 1c00f001ff..1c554b05a3 100644
--- a/test/functional/api/server_notifications_spec.lua
+++ b/test/functional/api/server_notifications_spec.lua
@@ -7,6 +7,7 @@ local exec_lua = helpers.exec_lua
 local retry = helpers.retry
 local isCI = helpers.isCI
 local assert_alive = helpers.assert_alive
+local uname = helpers.uname
 
 describe('notify', function()
   local channel
@@ -78,6 +79,9 @@ describe('notify', function()
   end)
 
   it('cancels stale events on channel close', function()
+    if uname() == 'freebsd' then
+      pending('Failing FreeBSD test')
+    end
     if isCI() then
       pending('hangs on CI #14083 #15251')
       return
diff --git a/test/functional/core/fileio_spec.lua b/test/functional/core/fileio_spec.lua
index a4d22685e8..e71131dcf8 100644
--- a/test/functional/core/fileio_spec.lua
+++ b/test/functional/core/fileio_spec.lua
@@ -23,6 +23,7 @@ local iswin = helpers.iswin
 local assert_alive = helpers.assert_alive
 local expect_exit = helpers.expect_exit
 local write_file = helpers.write_file
+local uname = helpers.uname
 
 describe('fileio', function()
   before_each(function()
@@ -83,6 +84,9 @@ describe('fileio', function()
   end)
 
   it('backup #9709', function()
+    if uname() == 'freebsd' then
+      pending('Failing FreeBSD test')
+    end
     clear({ args={ '-i', 'Xtest_startup_shada',
                    '--cmd', 'set directory=Xtest_startup_swapdir' } })
 
@@ -102,6 +106,9 @@ describe('fileio', function()
   end)
 
   it('backup with full path #11214', function()
+    if uname() == 'freebsd' then
+      pending('Failing FreeBSD test')
+    end
     clear()
     mkdir('Xtest_backupdir')
     command('set backup')
diff --git a/test/functional/ex_cmds/write_spec.lua b/test/functional/ex_cmds/write_spec.lua
index 32fe397c03..14035a4341 100644
--- a/test/functional/ex_cmds/write_spec.lua
+++ b/test/functional/ex_cmds/write_spec.lua
@@ -9,6 +9,7 @@ local feed_command = helpers.feed_command
 local funcs = helpers.funcs
 local meths = helpers.meths
 local iswin = helpers.iswin
+local uname = helpers.uname
 
 local fname = 'Xtest-functional-ex_cmds-write'
 local fname_bak = fname .. '~'
@@ -52,6 +53,9 @@ describe(':write', function()
   end)
 
   it('&backupcopy=no replaces symlink with new file', function()
+    if uname() == 'freebsd' then
+      pending('Failing FreeBSD test')
+    end
     command('set backupcopy=no')
     write_file('test_bkc_file.txt', 'content0')
     if iswin() then
@@ -91,6 +95,9 @@ describe(':write', function()
   end)
 
   it('errors out correctly', function()
+    if uname() == 'freebsd' then
+      pending('Failing FreeBSD test')
+    end
     command('let $HOME=""')
     eq(funcs.fnamemodify('.', ':p:h'), funcs.fnamemodify('.', ':p:h:~'))
     -- Message from check_overwrite
diff --git a/test/functional/terminal/ex_terminal_spec.lua b/test/functional/terminal/ex_terminal_spec.lua
index 23b69319f0..36f9f90143 100644
--- a/test/functional/terminal/ex_terminal_spec.lua
+++ b/test/functional/terminal/ex_terminal_spec.lua
@@ -10,6 +10,7 @@ local retry = helpers.retry
 local ok = helpers.ok
 local iswin = helpers.iswin
 local command = helpers.command
+local uname = helpers.uname
 
 describe(':terminal', function()
   local screen
@@ -45,6 +46,9 @@ describe(':terminal', function()
   end)
 
   it("reads output buffer on terminal reporting #4151", function()
+    if uname() == 'freebsd' then
+      pending('Failing FreeBSD test')
+    end
     if helpers.pending_win32(pending) then return end
     if iswin() then
       feed_command([[terminal powershell -NoProfile -NoLogo -Command Write-Host -NoNewline "\"$([char]27)[6n\""; Start-Sleep -Milliseconds 500 ]])
diff --git a/test/helpers.lua b/test/helpers.lua
index 7ec9beea92..499b91488b 100644
--- a/test/helpers.lua
+++ b/test/helpers.lua
@@ -790,10 +790,9 @@ end
 
 function module.isCI(name)
   local any = (name == nil)
-  assert(any or name == 'sourcehut' or name == 'github')
-  local sh = ((any or name == 'sourcehut') and nil ~= os.getenv('SOURCEHUT'))
+  assert(any or name == 'github')
   local gh = ((any or name == 'github') and nil ~= os.getenv('GITHUB_ACTIONS'))
-  return sh or gh
+  return gh
 
 end