PostgreSQL setup issue on macOS Monterey: initdb error encoding mismatch

I'm having issue while installing PostgreSQL 16 on macOS Monterey via MacPorts. So far, these looked OK: $ sudo port install postgresql16-server ---> Computing dependencies for postgresql16-server The following dependencies will be installed: postgresql16 Continue? [Y/n]: y ---> Fetching archive for postgresql16 Warning: Your DNS servers incorrectly claim to know the address of nonexistent hosts. This may cause checksum mismatches for some ports. See this page for more information: ... ... ... ---> No broken files found. ---> No broken ports found. ---> Some of the ports you installed have notes: postgresql16 has the following notes: To use the postgresql server as a startup item install the postgresql16-server port. postgresql16-server has the following notes: To create a database instance, after install do sudo port select postgresql postgresql16 sudo mkdir -p /opt/local/var/db/postgresql16/defaultdb sudo chown postgres:postgres /opt/local/var/db/postgresql16/defaultdb sudo -u postgres /bin/sh -c 'cd /opt/local/var/db/postgresql16 && /opt/local/lib/postgresql16/bin/initdb -D /opt/local/var/db/postgresql16/defaultdb' Except at the last part: $ sudo -u postgres /bin/sh -c 'cd /opt/local/var/db/postgresql16 && /opt/local/lib/postgresql16/bin/initdb -D /opt/local/var/db/postgresql16/defaultdb' The files belonging to this database system will be owned by user "postgres". This user must also own the server process. The database cluster will be initialized with this locale configuration: provider: libc LC_COLLATE: cs_CZ.ISO8859-2 LC_CTYPE: en_US.UTF-8 LC_MESSAGES: en_US.UTF-8 LC_MONETARY: en_US.UTF-8 LC_NUMERIC: en_US.UTF-8 LC_TIME: en_US.UTF-8 The default database encoding has accordingly been set to "UTF8". initdb: error: encoding mismatch initdb: detail: The encoding you selected (UTF8) and the encoding that the selected locale uses (LATIN2) do not match. This would lead to misbehavior in various character string processing functions. initdb: hint: Rerun initdb and either do not specify an encoding explicitly, or choose a matching combination. I have no idea how to fix this. Running sudo -u postgres /bin/sh -c 'cd /opt/local/var/db/postgresql16 && /opt/local/lib/postgresql16/bin/initdb -D /opt/local/var/db/postgresql16/defaultdb -E UTF8' gives same eror message. Perhaps this can provide some hints: $ locale LANG="en_US.UTF-8" LC_COLLATE="cs_CZ.ISO8859-2" LC_CTYPE="en_US.UTF-8" LC_MESSAGES="en_US.UTF-8" LC_MONETARY="en_US.UTF-8" LC_NUMERIC="en_US.UTF-8" LC_TIME="en_US.UTF-8" LC_ALL=