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67 lines
1.7 KiB
67 lines
1.7 KiB
#!/bin/bash
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# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This source code is licensed under the MIT license found in the
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# LICENSE file in the root directory of this source tree.
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# source this script to import its utility functions
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opam_retry () {
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"$@" || ( \
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echo >&2; \
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printf '*** `%s` failed\n' "$*" >&2; \
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echo '*** Updating opam then retrying' >&2; \
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opam update && \
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"$@" || ( \
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echo >&2; \
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printf '*** ERROR: `%s` failed\n' "$*" >&2; \
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exit 1 \
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) \
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)
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}
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opam_failed () {
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local command=$1
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echo
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printf '*** ERROR: %s failed\n' "$command" >&2
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printf "*** ERROR: Try running \$(opam update) then running this script again\n" >&2
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exit 1
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}
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opam_require_version_2 () {
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local status=0
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local version=0
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{ version=$(opam --version 2>/dev/null); status=$?; }
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if [ "$status" != 0 ]; then
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printf '*** ERROR: `opam --version` failed, please install opam version 2\n' >&2
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env >&2
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exit 1
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fi
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case $version in
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2*) ;;
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*)
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printf '*** ERROR: opam version "%s" is not supported, please install opam version 2\n' "$version" >&2
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printf '*** NOTE: opam is "%s"\n' "$(which opam)" >&2
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env >&2
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exit 1
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esac
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}
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# assumes opam is available and initialized
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opam_switch_create_if_needed () {
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local switch=$1
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local compiler=$2
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local switch_exists=no
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for installed_switch in $(opam switch list --short); do
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if [ "$installed_switch" == "$switch" ]; then
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switch_exists=yes
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break
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fi
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done
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if [ "$switch_exists" = "no" ]; then
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opam switch create "$switch" "$compiler"
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fi
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}
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opam_require_version_2
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