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Whenever we create scripts that are installed to $out, we must use runtimeShell in order to get the shell that can be executed on the machine we create the package for. This is relevant for cross-compiling. The only use case for stdenv.shell are scripts that are executed as part of the build system. Usages in checkPhase are borderline however to decrease the likelyhood of people copying the wrong examples, I decided to use runtimeShell as well.
62 lines
1.8 KiB
Nix
62 lines
1.8 KiB
Nix
{ stdenv, writeScript, runtimeShell }:
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writeScript "update-mendeley" ''
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#!${runtimeShell}
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function follow() {
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local URL=$1
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while true; do
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NEWURL=$(curl -m20 -sI "$URL" -o /dev/null -w '%{redirect_url}')
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[ -z "$NEWURL" ] && break
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[[ $NEWURL = $URL ]] && (echo "redirect loop?!"; exit 1)
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echo "Following $URL -> $NEWURL ..." >&2
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URL=$NEWURL
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done
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echo $URL
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}
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amd64URL=$(follow https://www.mendeley.com/repositories/ubuntu/stable/amd64/mendeleydesktop-latest)
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amd64V=$(basename $amd64URL|grep -m1 -o "[0-9]\+\.[0-9]\+\(\.[0-9]\+\)\?")
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i386URL=$(follow https://www.mendeley.com/repositories/ubuntu/stable/i386/mendeleydesktop-latest)
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i386V=$(basename $i386URL|grep -m1 -o "[0-9]\+\.[0-9]\+\(\.[0-9]\+\)\?")
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echo "amd64 version: $amd64V"
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echo "i386 version: $i386V"
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if [[ $amd64V != $i386V ]]; then
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echo "Versions not the same!"
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exit 1
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fi
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if grep -q -F "$amd64V" ${./default.nix}; then
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echo "No new version yet, nothing to do."
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echo "Have a nice day!"
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exit 0
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fi
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amd64OldHash=$(nix-instantiate --eval --strict -A "mendeley.src.drvAttrs.outputHash" --argstr system "x86_64-linux"| tr -d '"')
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i386OldHash=$(nix-instantiate --eval --strict -A "mendeley.src.drvAttrs.outputHash" --argstr system "i686-linux"| tr -d '"')
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echo "Prefetching amd64..."
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amd64NewHash=$(nix-prefetch-url $amd64URL)
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echo "Prefetching i386..."
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i386NewHash=$(nix-prefetch-url $i386URL)
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# Don't actually update, just report that an update is available
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cat <<EOF
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Time to update to $amd64V !
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32bit (i386):
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Old: $i386OldHash
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New: $i386NewHash
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64bit (amd64):
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Old: $amd64OldHash
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New: $amd64NewHash
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Exiting so this information is seen...
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(no update is actually performed here)
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EOF
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exit 1
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''
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