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#!/usr/bin/env nix-shell
#!nix-shell -i bash -p curl jq
set -euo pipefail
# so if the script fails, debug logs are on stdenv
log() {
>&2 echo "DART_UPDATER: $@"
}
# fetch the latest version number from upstream
NEW_VER_DETAILS=$(curl -sL https://storage.googleapis.com/dart-archive/channels/stable/release/latest/VERSION)
NEW_VER=$(jq -r '.version' <<< "$NEW_VER_DETAILS")
MY_PATH=$(dirname $(realpath "$0"))
SRC_FILE="$MY_PATH/sources.nix"
log "file to write is $SRC_FILE"
PRELUDE="# This file was generated by ./update.sh.
# If you do not find a line of three #-s at the end, it is broken and should not be used.
let version = \"$NEW_VER\"; in
{ fetchurl }: {
versionUsed = version;"
echo "$PRELUDE" > "$SRC_FILE"
log "wrote prelude"
# Fetches the source, then writes the fetcher and hash into the sources file.
# Arguments:
# - $1: VARIABLE NAME of (table of nix platform -> dart platform mappings) ("DARWIN_PLATFORMS"|"LIN_PLATFORMS")
# - $2: Dart-OS ("macos"|"linux")
write_for_platform() {
BASE_OF_ALL_URLS='https://storage.googleapis.com/dart-archive/channels/stable/release'
BASE_URL_WRITTEN="$BASE_OF_ALL_URLS/\${version}/sdk"
BASE_URL_FETCHED="$BASE_OF_ALL_URLS/$NEW_VER/sdk"
TABLE_NAME=$1
declare -n TABLE=$TABLE_NAME
for platform in "${!TABLE[@]}"; do
DART_PLATFORM="${TABLE[$platform]}"
log "trying for dartplatform $DART_PLATFORM (platform $platform) (OS $2)"
URL_POSTFIX="dartsdk-$2-$DART_PLATFORM-release.zip"
URL="$BASE_URL_FETCHED/$URL_POSTFIX"
log "URL for $DART_PLATFORM: $URL"
HASH=$(nix-prefetch-url "$URL" --type sha256)
log "hash for platform $platform: $HASH"
FETCHER=" \"\${version}-$platform\" = fetchurl {
url = \"$BASE_URL_WRITTEN/$URL_POSTFIX\";
sha256 = \"$HASH\";
};"
echo "$FETCHER" >> $SRC_FILE
done
log "finished for $1
---"
}
# Map nix platforms -> Dart platforms
X8664="x64"
AARCH64="arm64"
I686="ia32"
declare -A DARWIN_PLATFORMS=(["aarch64-darwin"]="$AARCH64"
["x86_64-darwin"]="$X8664")
declare -A LIN_PLATFORMS=( ["x86_64-linux"]="$X8664"
["i686-linux"]="$I686"
["aarch64-linux"]="$AARCH64")
write_for_platform "DARWIN_PLATFORMS" "macos"
write_for_platform "LIN_PLATFORMS" "linux"
echo '}
###' >> $SRC_FILE
log "Replacing version in dart/default.nix"
sed -i "s/$UPDATE_NIX_OLD_VERSION/$NEW_VER/g" "$MY_PATH/default.nix"
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