unrar and rar no longer supported in nextcloud aio

[leosamuele221]

Hi,
I'm using nextcloud AIO, the nextcloud container uses Alpine Linux v3.18 that dont support unrar (https://pkgs.alpinelinux.org/packages?name=unrar&branch=v3.18&repo=&arch=&maintainer=)
In fact, support for unrar in alpine linux was removed from v3.15 and now is totally abandoned

Very similar story for php rar extension:
nextcloud aio uses PHP 8.1 while rar extension is supported at most by PHP 8.0 (https://pecl.php.net/package-changelog.php?package=rar see v4.2.0)

There is actually no alternatives to this in alpine linux 3.18
I suggest to move everything to p7zip wich can only extract rar (https://7-zip.org/) but it's better than nothing.

Also this is my error log when trying to install php rar extension:

Installing PHP extension rar ...
error: /usr/src/php/ext/rar does not exist

usage: /usr/local/bin/docker-php-ext-install [-jN] [--ini-name file.ini] ext-name [ext-name ...]
   ie: /usr/local/bin/docker-php-ext-install gd mysqli
       /usr/local/bin/docker-php-ext-install pdo pdo_mysql
       /usr/local/bin/docker-php-ext-install -j5 gd mbstring mysqli pdo pdo_mysql shmop

if custom ./configure arguments are necessary, see docker-php-ext-configure

Possible values for ext-name:
bcmath bz2 calendar ctype curl dba dl_test dom enchant exif ffi fileinfo filter ftp gd gettext gmp hash iconv imap intl json ldap mbstring mysqli oci8 odbc opcache pcntl pdo pdo_dblib pdo_firebird pdo_mysql pdo_oci pdo_odbc pdo_pgsql pdo_sqlite pgsql phar posix pspell readline reflection session shmop simplexml snmp soap sockets sodium spl standard sysvmsg sysvsem sysvshm tidy tokenizer xml xmlreader xmlwriter xsl zend_test zip

Some of the above modules are already compiled into PHP; please check
the output of "php -i" to see which modules are already loaded.
Could not install rar from core. Trying to install from PECL...
error: 'rar' does not exist

usage: /usr/local/bin/docker-php-ext-enable [options] module-name [module-name ...]
   ie: /usr/local/bin/docker-php-ext-enable gd mysqli
       /usr/local/bin/docker-php-ext-enable pdo pdo_mysql
       /usr/local/bin/docker-php-ext-enable --ini-name 0-apc.ini apcu apc

Possible values for module-name:
apcu.so bcmath.so bz2.so exif.so gd.so gmp.so imagick.so imap.so intl.so ldap.so memcached.so opcache.so pcntl.so pdo_pgsql.so pgsql.so redis.so smbclient.so sodium.so sysvsem.so zip.so

Some of the above modules are already compiled into PHP; please check
the output of "php -i" to see which modules are already loaded.
Could also not install rar from PECL. The PHP extensions was not installed!

[komoricodrutz]

@leosamuele221
I had similar issue on debian bookworm. "no installation candidate".
Try and find the package "unrar-free" in repos.
Got this info from here
Installing unrar-free helped in this context