cashapp Hermit
Use Hermit-managed tools whenever a repository contains a Hermit activation script.
Detect Hermit
Treat a repository as Hermit-managed when it contains bin/activate-hermit.
Related files commonly include bin/hermit, bin/hermit.hcl, and
bin/README.hermit.md.
Before running project commands, check for Hermit from the repository root:
test -f ./bin/activate-hermit
Run Commands
Prefer the repository's Hermit environment over globally installed tools. For agent command runners and other non-interactive POSIX shells, apply the Hermit environment in the same shell invocation as the command:
eval "$(./bin/hermit env --activate)" && go test ./...
For interactive POSIX shells, source the activation script:
. ./bin/activate-hermit && go test ./...
For fish shells, use:
source ./bin/activate-hermit.fish; go test ./...
Do not install missing tools with another package manager until checking
whether the project expects Hermit to provide them. If a tool is unavailable,
run hermit search <tool> from the activated environment.
When automation needs environment variables without sourcing shell hooks, use:
./bin/hermit env --raw
Modify Toolchains
Use Hermit commands to change tools in a Hermit-managed repository:
./bin/hermit install <package>
./bin/hermit uninstall <package>
After changing packages, run the repository's tests through the Hermit environment.
Configure Environment Variables
Use hermit env to set persistent environment variables for the Hermit
environment:
./bin/hermit env <name> <value>
After changing environment variables, run the repository's tests through the Hermit environment.