ci: macos: use cached macports install

A significant chunk of the time on the macos CI task is spent installing
packages using homebrew. The downloads of the packages are cached, but the
installation needs to happen every time. We can't cache the whole homebrew
installation, because it is too large due to pre-installed packages.

Speed this up by installing packages using macports and caching the
installation as .dmg. That's a lot faster than unpacking a tarball.

In addition, don't install llvm - it wasn't enabled when building, so it's
just a waste of time/space.

This substantially speeds up the mac CI time, both in the cold cache and in
the warm cache case (the latter from ~1m20s to ~5s).

It doesn't seem great to have diverging sources of packages for CI between
branches, so backpatch to 15 (where CI was added).

Discussion: https://postgr.es/m/20230805202539.r3umyamsnctysdc7@awork3.anarazel.de
Backpatch: 15-, where CI was added

1 files changed, 25 insertions, 38 deletions

diff --git a/.cirrus.yml b/.cirrus.yml
index 626766e39f6..8203b2f90a6 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -435,8 +435,7 @@ task:
 
     CIRRUS_WORKING_DIR: ${HOME}/pgsql/
     CCACHE_DIR: ${HOME}/ccache
-    HOMEBREW_CACHE: ${HOME}/homebrew-cache
-    PERL5LIB: ${HOME}/perl5/lib/perl5
+    MACPORTS_CACHE: ${HOME}/macports-cache
 
     CC: ccache cc
     CXX: ccache c++
@@ -459,55 +458,43 @@ task:
     - mkdir ${HOME}/cores
     - sudo sysctl kern.corefile="${HOME}/cores/core.%P"
 
-  perl_cache:
-    folder: ~/perl5
-  cpan_install_script:
-    - perl -mIPC::Run -e 1 || cpan -T IPC::Run
-    - perl -mIO::Pty -e 1 || cpan -T IO::Pty
-  upload_caches: perl
-
-
-  # XXX: Could we instead install homebrew into a cached directory? The
-  # homebrew installation takes a good bit of time every time, even if the
-  # packages do not need to be downloaded.
-  homebrew_cache:
-    folder: $HOMEBREW_CACHE
+  # Use macports, even though homebrew is installed. The installation
+  # of the additional packages we need would take quite a while with
+  # homebrew, even if we cache the downloads. We can't cache all of
+  # homebrew, because it's already large. So we use macports. To cache
+  # the installation we create a .dmg file that we mount if it already
+  # exists.
+  # XXX: The reason for the direct p5.34* references is that we'd need
+  # the large macport tree around to figure out that p5-io-tty is
+  # actually p5.34-io-tty. Using the unversioned name works, but
+  # updates macports every time.
+  macports_cache:
+    folder: ${MACPORTS_CACHE}
   setup_additional_packages_script: |
-    brew install \
+    sh src/tools/ci/ci_macports_packages.sh \
       ccache \
-      icu4c \
-      krb5 \
-      llvm \
+      icu \
+      kerberos5 \
       lz4 \
-      make \
       meson \
       openldap \
       openssl \
-      python \
-      tcl-tk \
+      p5.34-io-tty \
+      p5.34-ipc-run \
+      tcl \
       zstd
-
-    brew cleanup -s # to reduce cache size
-  upload_caches: homebrew
+    # Make macports install visible for subsequent steps
+    echo PATH=/opt/local/sbin/:/opt/local/bin/:$PATH >> $CIRRUS_ENV
+  upload_caches: macports
 
   ccache_cache:
     folder: $CCACHE_DIR
   configure_script: |
-    brewpath="/opt/homebrew"
-    PKG_CONFIG_PATH="${brewpath}/lib/pkgconfig:${PKG_CONFIG_PATH}"
-
-    for pkg in icu4c krb5 openldap openssl zstd ; do
-      pkgpath="${brewpath}/opt/${pkg}"
-      PKG_CONFIG_PATH="${pkgpath}/lib/pkgconfig:${PKG_CONFIG_PATH}"
-      PATH="${pkgpath}/bin:${pkgpath}/sbin:$PATH"
-    done
-
-    export PKG_CONFIG_PATH PATH
-
+    export PKG_CONFIG_PATH="/opt/local/lib/pkgconfig/"
     meson setup \
       --buildtype=debug \
-      -Dextra_include_dirs=${brewpath}/include \
-      -Dextra_lib_dirs=${brewpath}/lib \
+      -Dextra_include_dirs=/opt/local/include \
+      -Dextra_lib_dirs=/opt/local/lib \
       -Dcassert=true \
       -Duuid=e2fs -Ddtrace=auto \
       -DPG_TEST_EXTRA="$PG_TEST_EXTRA" \