tjh.dev
1#!/usr/bin/env nix-shell
2#!nix-shell -i bash -p curl gnused nix-prefetch jq
3
4set -euo pipefail
5URL="https://github.com/fable-compiler/fable"
6PKG="Fable"
7ROOT="$(dirname "$(readlink -f "$0")")"
8NIX_DRV="$ROOT/default.nix"
9if [ ! -f "$NIX_DRV" ]; then
10 echo "ERROR: cannot find default.nix in $ROOT"
11 exit 1
12fi
13
14TMP="$(mktemp -d)"
15clean_up() {
16 rm -rf "$TMP"
17}
18trap clean_up EXIT SIGINT SIGTERM
19PACKAGES="$TMP/packages"
20SRC_RW="$TMP/src"
21
22mkdir -p $SRC_RW
23mkdir -p $PACKAGES
24
25
26VER=$(curl -s "https://api.github.com/repos/fable-compiler/fable/releases/latest" | jq -r .tag_name | grep -oP '\d+\.\d+\.\d+' )
27
28CURRENT_VER=$(grep -oP '(?<=version = ")[^"]+' "$NIX_DRV")
29if [[ "$CURRENT_VER" == "$VER" ]]; then
30 echo "$PKG is already up to date: $CURRENT_VER"
31 exit
32fi
33
34
35NUGET_URL="$(curl -f "https://api.nuget.org/v3/index.json" | jq --raw-output '.resources[] | select(."@type" == "PackageBaseAddress/3.0.0")."@id"')$PKG/$VER/$PKG.$VER.nupkg"
36HASH=$(nix-hash --to-sri --type sha256 "$(nix-prefetch-url "$NUGET_URL")")
37
38sed -i "s/version = \".*\"/version = \"$VER\"/" "$NIX_DRV"
39sed -i "s#nugetSha256 = \"sha256-.\{44\}\"#nugetSha256 = \"$HASH\"#" "$NIX_DRV"