Spack-intersection

a Spack extension to generate an environment spack.yaml files from others, containing unlisted, shared, dependencies

Usage

In most cases you can just do:

spack intersection e1_spack.yaml e2_spack.yaml e3_spack.yaml

It will generate an "intersection_spack.yaml" file which you can use to create overlapping environments, as:

spack env create int_env e1_spack.yaml
spack -e int_env concretize 
spack env create --include-concrete int_env e1 e1_spack.yaml
spack env create --include-concrete int_env e2 e2_spack.yaml
spack env create --include-concrete int_env e3 e3_spack.yaml

and those environments should share dependencies.