Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires moox/address * -> satisfiable by moox/address[dev-feature/page]. - moox/address dev-feature/page requires moox/core dev-main -> satisfiable by moox/core[dev-main] from composer repo (https://repo.packagist.org) but moox/core[dev-feature/page] from path repo (packages/core) has higher repository priority. The packages from the higher priority repository do not match your constraint and are therefore not installable. That repository is canonical so the lower priority repo's packages are not installable. See https://getcomposer.org/repoprio for details and assistance. Problem 2 - Root composer.json requires moox/attribute * -> satisfiable by moox/attribute[dev-feature/page]. - moox/attribute dev-feature/page requires moox/core dev-main -> satisfiable by moox/core[dev-main] from composer repo (https://repo.packagist.org) but moox/core[dev-feature/page] from path repo (packages/core) has higher repository priority. The packages from the higher priority repository do not match your constraint and are therefore not installable. That repository is canonical so the lower priority repo's packages are not installable. See https://getcomposer.org/repoprio for details and assistance. Problem 3 - Root composer.json requires moox/audit * -> satisfiable by moox/audit[dev-feature/page]. - moox/audit dev-feature/page requires moox/core dev-main -> satisfiable by moox/core[dev-main] from composer repo (https://repo.packagist.org) but moox/core[dev-feature/page] from path repo (packages/core) has higher repository priority. The packages from the higher priority repository do not match your constraint and are therefore not installable. That repository is canonical so the lower priority repo's packages are not installable. See https://getcomposer.org/repoprio for details and assistance. Problem 4 - Root composer.json requires moox/backup-server * -> satisfiable by moox/backup-server[dev-feature/page]. - moox/backup-server dev-feature/page requires moox/core dev-main -> satisfiable by moox/core[dev-main] from composer repo (https://repo.packagist.org) but moox/core[dev-feature/page] from path repo (packages/core) has higher repository priority. The packages from the higher priority repository do not match your constraint and are therefore not installable. That repository is canonical so the lower priority repo's packages are not installable. See https://getcomposer.org/repoprio for details and assistance. Problem 5 - Root composer.json requires moox/build * -> satisfiable by moox/build[dev-feature/page]. - moox/build dev-feature/page requires moox/core dev-main -> satisfiable by moox/core[dev-main] from composer repo (https://repo.packagist.org) but moox/core[dev-feature/page] from path repo (packages/core) has higher repository priority. The packages from the higher priority repository do not match your constraint and are therefore not installable. That repository is canonical so the lower priority repo's packages are not installable. See https://getcomposer.org/repoprio for details and assistance. Problem 6 - Root composer.json requires moox/category * -> satisfiable by moox/category[dev-feature/page]. - moox/category dev-feature/page requires moox/core dev-main -> satisfiable by moox/core[dev-main] from composer repo (https://repo.packagist.org) but moox/core[dev-feature/page] from path repo (packages/core) has higher repository priority. The packages from the higher priority repository do not match your constraint and are therefore not installable. That repository is canonical so the lower priority repo's packages are not installable. See https://getcomposer.org/repoprio for details and assistance. Problem 7 - Root composer.json requires moox/clipboard * -> satisfiable by moox/clipboard[dev-feature/page]. - moox/clipboard dev-feature/page requires moox/core dev-main -> satisfiable by moox/core[dev-main] from composer repo (https://repo.packagist.org) but mo