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#!@runtimeShell@
set -euo pipefail
shopt -s nullglob
export PATH="@binPath@"
# used for glob ordering of package names
export LC_ALL=C
if [ $# -eq 0 ]; then
>&2 echo "Usage: $0 <packages directory> [path to a file with a list of excluded packages] > deps.nix"
exit 1
fi
pkgs=$1
tmp=$(realpath "$(mktemp -td nuget-to-nix.XXXXXX)")
trap 'rm -r "$tmp"' EXIT
excluded_list=$(realpath "${2:-/dev/null}")
export DOTNET_NOLOGO=1
export DOTNET_CLI_TELEMETRY_OPTOUT=1
mapfile -t sources < <(dotnet nuget list source --format short | awk '/^E / { print $2 }')
declare -a remote_sources
declare -A base_addresses
for index in "${sources[@]}"; do
if [[ -d "$index" ]]; then
continue
fi
remote_sources+=($index)
base_addresses[$index]=$(
curl --compressed --netrc -fsL "$index" | \
jq -r '.resources[] | select(."@type" == "PackageBaseAddress/3.0.0")."@id"')
done
echo "{ fetchNuGet }: ["
cd "$pkgs"
for package in *; do
[[ -d "$package" ]] || continue
cd "$package"
for version in *; do
id=$(xq -r .package.metadata.id "$version"/*.nuspec)
if grep -qxF "$id.$version.nupkg" "$excluded_list"; then
continue
fi
used_source="$(jq -r '.source' "$version"/.nupkg.metadata)"
if [[ -d "$used_source" ]]; then
continue
fi
for source in "${remote_sources[@]}"; do
url="${base_addresses[$source]}$package/$version/$package.$version.nupkg"
if [[ "$source" == "$used_source" ]]; then
sha256="$(nix-hash --type sha256 --flat --base32 "$version/$package.$version".nupkg)"
found=true
break
else
if sha256=$(nix-prefetch-url "$url" 2>"$tmp"/error); then
# If multiple remote sources are enabled, nuget will try them all
# concurrently and use the one that responds first. We always use the
# first source that has the package.
echo "$package $version is available at $url, but was restored from $used_source" 1>&2
found=true
break
else
if ! grep -q 'HTTP error 404' "$tmp/error"; then
cat "$tmp/error" 1>&2
exit 1
fi
fi
fi
done
if ! ${found-false}; then
echo "couldn't find $package $version" >&2
exit 1
fi
if [[ "$source" != https://api.nuget.org/v3/index.json ]]; then
echo " (fetchNuGet { pname = \"$id\"; version = \"$version\"; sha256 = \"$sha256\"; url = \"$url\"; })"
else
echo " (fetchNuGet { pname = \"$id\"; version = \"$version\"; sha256 = \"$sha256\"; })"
fi
done
cd ..
done
cat << EOL
]
EOL
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