Create auto-updater

2025-08-08 16:14:06 -05:00
parent 9066dcfeea
commit 4df117b535
3 changed files with 96 additions and 0 deletions
@@ -0,0 +1,37 @@
+{
+  writeShellApplication,
+  gnugrep,
+  nix-prefetch,
+  subversion,
+}:
+writeShellApplication {
+  name = "sword-updater";
+  runtimeInputs = [
+    gnugrep
+    nix-prefetch
+    subversion
+  ];
+
+  text = ''
+    url="https://www.crosswire.org/svn/sword/trunk"
+    old_rev="$(grep "${./flake.nix}" -e "rev = " | sed -E -e 's/.*"(.*)".*/\1/')"
+    echo "OLD_REV=$old_rev"
+    new_rev="$(svn info "$url" --show-item revision)"
+    echo "NEW_REV=$new_rev"
+    if [ "$new_rev" == "$old_rev" ]; then
+      #exit 0
+    else
+      echo "DO_UPDATE=1"
+    fi
+    hash="$(nix-prefetch \
+        --check-store \
+        --option extra-experimental-features flakes \
+        fetchsvn \
+        --url "$url" \
+        --rev "$new_rev" \
+    )"
+    echo "HASH=$hash"
+    sed -i flake.nix \
+        -e "s/rev = \"$old_rev\"/rev = \"$new_rev\"/"
+  '';
+}