40 lines
749 B
Plaintext
40 lines
749 B
Plaintext
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#!/bin/sh
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set -e +x
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function fail {
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echo "$0: $1" >&2
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exit 1
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}
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USAGE="Usage: $0 dep"
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if [ $# -ne 1 ]; then
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fail "$USAGE"
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fi
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DEP=$1
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CABALFILE=$(ls *.cabal)
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if [ $(echo $CABALFILE | wc -w) -ne 1 ]; then
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fail "There needs to be one .cabal file in the current dir!"
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fi
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BREAK=[^[:alnum:]-]
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if ! grep -q "$BREAK$DEP$BREAK[^,]*" $CABALFILE; then
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fail "$CABALFILE does not match: $DEP"
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fi
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if [ ! -f $CABALFILE.orig ]; then
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BACKUP=.orig
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fi
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if grep -q "$BREAK$DEP$BREAK[^,]*&&" $CABALFILE; then
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sed -i$BACKUP -e "s/\($BREAK$DEP$BREAK[^&,]*[^ ]\+\) *&&[^,]*/\1/g" $CABALFILE
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fi
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if grep -q "$BREAK$DEP$BREAK[^,]*==" $CABALFILE; then
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sed -i$BACKUP -e "s/\($BREAK$DEP$BREAK[^=,]*\)==\([^,*]*\)\.\*/\1>=\2/g" $CABALFILE
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fi
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