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Don't assume brew is available in the system #442

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Don't assume brew is available in the system #442

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13 changes: 8 additions & 5 deletions lib/helpers.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -140,13 +140,16 @@ function error_and_proceed() {
export -f error_and_proceed;

function check_dependencies() {
if [[ $(uname) == 'Darwin' ]] && [ $(which brew) ]; then
if ! [ $(which ggrep) ]; then
log 'error' 'A metaphysical dichotomy has caused this unit to overload and shut down. GNU Grep is a requirement and your Mac does not have it. Consider "brew install grep"';
if [[ $(uname) == 'Darwin' ]]; then
# If installed through brew, it will be available as `ggrep`, so we alias it to `grep`
if command -v ggrep >/dev/null 2>&1; then
shopt -s expand_aliases;
alias grep=ggrep;
fi;

shopt -s expand_aliases;
alias grep=ggrep;
if ! grep --version 2>&1 | grep -q "GNU grep"; then
log 'error' 'GNU Grep is a requirement and your Mac does not have it. Consider installing it with `brew install grep` or `nix profile install nixpkgs#gnugrep`';
fi;
fi;
};
export -f check_dependencies;
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