50 lines
1.1 KiB
Bash
Executable File
50 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# MAINTAINER: yuri@FreeBSD.org
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set -e
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set -o pipefail
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export LC_ALL=C
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##
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## hackage-get-latest-version.sh: retrieves the latest version of a given Haskell package as registered on https://hackage.haskell.org
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##
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# args
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PACKAGE_NAME="$1"
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if [ -z "$PACKAGE_NAME" ]; then
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echo "Usage: $0 <package-name>"
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echo "Example: $0 cryptol"
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echo "Example: $0 ShellCheck"
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exit 1
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fi
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# check that packaged dependencies are installed
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for dep in curl jq version_sort; do
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if ! which -s $dep; then
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echo "error: the '$dep' dependency is missing"
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if [ $dep = "curl" ]; then
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echo "... please install the 'curl' package"
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elif [ $dep = "jq" ]; then
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echo "... please install the 'jq' package"
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elif [ $dep = "version_sort" ]; then
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echo "... please install the 'libversion' package"
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fi
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exit 1
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fi
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done
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# MAIN
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curl -H "Accept: application/json" https://hackage.haskell.org/package/$PACKAGE_NAME 2>/dev/null |
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grep -v "Package not found: No such package in package index" |
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jq -r 'keys[]' |
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version_sort |
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tail -1 ||
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! echo "failed to find the Haskell package '$PACKAGE_NAME'"
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