## Feature request ~~Add a rule to the installation workflow to build the index for the downloaded `sortmerna` FASTA files.~~ ~~See the rule `sortmerna_databases_index` [here](https://gitlab.com/uniluxembourg/lcsb/systems-ecology/imp/imp3/-/blob/master/workflow/rules/ini/databases.smk#L30).~~ ~~This rule is not executed as `databases.smk` is not included in the main `Snakefile`.~~ ### Update Since version 4.0, `sortmerna` does not have a command for creating the index files (see [here](https://github.com/biocore/sortmerna/wiki/User-manual-v4.0#usage)), and the created index files are not named using the base names of the given FASTA files. Since building the index files seems to be fast, and defining the expected base names is too cumbersome, the index files should be built by `sortmerna` when the main pipeline is being executed. Use the code base from issue #33 (branch [issue33](https://gitlab.com/uniluxembourg/lcsb/systems-ecology/imp/imp3/-/tree/issue33)).