par curiosité, que donne cette commande
admin@home ~> sudo apt list --installed | grep php7.4
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
php7.4-apcu-bc/buster,now 1.0.5-14+0~20211115.22+debian10~1.gbpa00758 amd64 [installé, automatique]
php7.4-apcu/buster,now 5.1.21+4.0.11-7+0~20220117.31+debian10~1.gbp9a887a amd64 [installé, automatique]
php7.4-bcmath/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-cli/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-common/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-curl/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-fpm/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-gd/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-igbinary/buster,now 3.2.7+2.0.8-1+0~20220421.34+debian10~1.gbp53e1f5 amd64 [installé, automatique]
php7.4-imagick/buster,now 3.6.0-4+0~20220117.35+debian10~1.gbp149f82 amd64 [installé, automatique]
php7.4-intl/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-json/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-mbstring/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-mysql/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-opcache/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-pgsql/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-readline/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-redis/buster,now 5.3.7+4.3.0-1+0~20220330.42+debian10~1.gbp6fe8b7 amd64 [installé, automatique]
php7.4-sqlite3/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-tidy/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-xml/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4-zip/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea amd64 [installé, automatique]
php7.4/buster,now 7.4.29-1+0~20220422.62+debian10~1.gbp6939ea all [installé, automatique]