84 lines
3.0 KiB
Bash
Executable File
84 lines
3.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# This script is used by the Makefile to have an implicit nix-shell.
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# The following environment variables modify the script behavior:
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# - TARGET: This attribute is passed as `targets` arg to Nix, limiting the scope
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# of the Nix expressions.
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# - _NIX_ATTR: Used to specify an attribute set from inside the expression in `default.nix`.
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# This allows for drilling down into a specific attribute in Nix expressions.
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# - _NIX_PURE: This variable allows for making the shell pure with the use of --pure.
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# Take note that this makes Nix tools like `nix-build` unavailable in the shell.
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# - _NIX_KEEP: This variable allows specifying which env vars to keep for Nix pure shell.
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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NC='\033[0m'
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export TERM=xterm # fix for colors
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shift # we remove the first -c from arguments
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if ! command -v "nix" >/dev/null 2>&1; then
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if [ -f ~/.nix-profile/etc/profile.d/nix.sh ]; then
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. ~/.nix-profile/etc/profile.d/nix.sh
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elif [ "$IN_NIX_SHELL" != 'pure' ]; then
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echo -e "${GREEN}Setting up environment...${NC}" > /dev/stderr
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./scripts/setup
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. ~/.nix-profile/etc/profile.d/nix.sh
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fi
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fi
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if !command -v "nix" >/dev/null 2>&1; then
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echo "Nix not available, sourcing profile failed!" > /dev/stderr
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exit 1
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fi
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shellArgs=(
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"--show-trace"
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)
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if [[ -n "${TARGET}" ]]; then
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shellArgs+=("--argstr target ${TARGET}")
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else
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echo -e "${YELLOW}Env is missing TARGET, assuming default target.${NC} See nix/README.md for more details." 1>&2
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fi
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if [[ "$TARGET" =~ (linux|windows|darwin|macos) ]]; then
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# This is a dirty workaround because 'yarn install' is an impure operation,
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# so we need to call it from an impure shell.
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# Hopefully we'll be able to fix this later on with something like yarn2nix
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nix-shell ${shellArgs[@]} --run "scripts/prepare-for-desktop-platform.sh" || exit
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fi
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if [ -n "${STATUS_GO_SRC_OVERRIDE}" ]; then
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shellArgs+=("--arg config {status_go.src_override=\"${STATUS_GO_SRC_OVERRIDE}\";}")
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fi
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# if _NIX_ATTR is specified we shouldn't use shell.nix, the path will be different
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entryPoint="shell.nix"
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if [ -n "${_NIX_ATTR}" ]; then
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shellArgs+=("--attr ${_NIX_ATTR}")
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entryPoint="default.nix"
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fi
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# ENTER_NIX_SHELL is the fake command used when `make shell` is run.
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# It is just a special string, not a variable, and a marker to not use `--run`.
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if [[ $@ == "ENTER_NIX_SHELL" ]]; then
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echo -e "${GREEN}Configuring ${_NIX_ATTR:-default} Nix shell for target '${TARGET:-default}'...${NC}" 1>&2
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exec nix-shell ${shellArgs[@]} ${entryPoint}
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else
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# Not all builds are ready to be run in a pure environment
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if [[ -n "${_NIX_PURE}" ]]; then
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shellArgs+=("--pure")
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pureDesc='pure '
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fi
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# This variable allows specifying which env vars to keep for Nix pure shell
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# The separator is a semicolon
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if [[ -n "${_NIX_KEEP}" ]]; then
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shellArgs+=("--keep ${_NIX_KEEP//;/ --keep }")
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fi
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echo -e "${GREEN}Configuring ${pureDesc}${_NIX_ATTR:-default} Nix shell for target '${TARGET}'...${NC}" 1>&2
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exec nix-shell ${shellArgs[@]} --run "$@" ${entryPoint}
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fi
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