Yann Autissier
55fae625d6
Two mechanisms, matching what the make engine actually did:
Lazy defaults. A stack setting is a function myos_default_<VAR>, called only
when the variable has no value, and called again at every reference. That is
exactly a recursive ?=: an explicit value wins, and the default follows a
DOMAIN that a .env changes later. The prefix is what makes it safe; the first
version used a bare function named after the variable, and the test suite
caught it running /usr/bin/host for a stack group called host.
Templates. myos env-update fills a .env from the .env.dist files, expanding
${VAR} against the current values and running $(command), forward references
included.
Also fixed: the project .env now wins over /etc/conf.d/myos, which is what the
documentation claimed and the code did not.
share/make/shim.mk lets a project keep make as a front end: every myos command
becomes a target that shells out to bin/myos, and the project keeps its own
targets and its stack .mk files. It sits outside make/ because the legacy
engine globs every .mk in there.
27 lines
1009 B
Bash
27 lines
1009 B
Bash
#shellcheck shell=sh
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# myos env-update fill the .env of the workdir from the .env.dist it finds
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#
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# Templates are read from the workdir and from every requested stack, so a
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# stack can ship the variables it expects and their defaults.
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myos_cmd_env_update() {
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_target=${ENV_FILE:-$WORKDIR/.env}
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_dists=$MYOS_ARGS
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if [ -z "$_dists" ]; then
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for _ref in $MYOS_STACKS; do
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_d=$(myos_stack_resolve "$_ref" 2>/dev/null) || continue
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for _c in "$_d/.env.dist" "$_d/$(myos_stack_name "$_ref").env.dist"; do
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[ -f "$_c" ] && _dists="${_dists:+$_dists }$_c"
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done
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done
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for _c in "$WORKDIR/.env.dist" "$WORKDIR/.env.example" "$WORKDIR/.env.sample"; do
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[ -f "$_c" ] && _dists="${_dists:+$_dists }$_c"
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done
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fi
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[ -n "$_dists" ] || { myos_warning "no .env.dist found for $MYOS_STACKS"; return 0; }
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for _dist in $_dists; do
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myos_info "env-update $_target from $_dist"
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myos_env_update "$_target" "$_dist" "$WORKDIR/.env.$ENV"
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done
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printf '%s\n' "$_target"
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}
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