Small part of my makefile that is bad.

Makefile

# asdf --------------------------------------------------------------------- {{{

# TODO: This is horrible.  Do this in a loop and stash the results of `asdf
#       plugin-list` so you only have to call it once.
node_installed   := $(shell [[ "$(shell asdf plugin-list)" == *nodejs* ]] && echo 0 || echo 1)
ruby_installed   := $(shell [[ "$(shell asdf plugin-list)" == *ruby*   ]] && echo 0 || echo 1)
golang_installed := $(shell [[ "$(shell asdf plugin-list)" == *golang* ]] && echo 0 || echo 1)
rust_installed   := $(shell [[ "$(shell asdf plugin-list)" == *rust*   ]] && echo 0 || echo 1)
python_installed := $(shell [[ "$(shell asdf plugin-list)" == *python* ]] && echo 0 || echo 1)

.PHONY: asdf
asdf: | ## Install specific verions of languages -- language versions specified in ~/.tool-versions.
ifeq ($(node_installed), 1)
	asdf plugin-add nodejs
endif
ifeq ($(ruby_installed), 1)
	asdf plugin-add ruby
endif
ifeq ($(golang_installed), 1)
	asdf plugin-add golang
endif
ifeq ($(rust_installed), 1)
	asdf plugin-add rust
endif
ifeq ($(python_installed), 1)
	asdf plugin-add python
endif
	asdf install

# }}}