From 94f5f53ca9875d8b32ac441e96b792e7e8737e45 Mon Sep 17 00:00:00 2001
From: damocles <damocles@hyperhive>
Date: Thu, 21 May 2026 21:24:41 +0200
Subject: [PATCH] harness: rasterize SVG icon to PNG for Forgejo avatar upload
 (fixes #197)

---
 nix/templates/harness-base.nix | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/nix/templates/harness-base.nix b/nix/templates/harness-base.nix
index e1bd287..b5f2175 100644
--- a/nix/templates/harness-base.nix
+++ b/nix/templates/harness-base.nix
@@ -431,7 +431,7 @@
       path = [
         pkgs.curl
         pkgs.coreutils
-        pkgs.python3
+        pkgs.librsvg
       ];
       script = ''
         ICON=/etc/hyperhive/icon.svg
@@ -452,9 +452,16 @@
           exit 0
         fi
         TOKEN=$(cat "$TOKEN_FILE")
-        # Base64-encode the SVG and wrap in a data URI.
-        IMAGE=$(base64 -w 0 < "$ICON")
-        DATA_URI="data:image/svg+xml;base64,$IMAGE"
+        # Rasterize SVG → PNG (Forgejo's Go image library can't decode SVG).
+        PNG=$(mktemp --suffix=.png)
+        if ! rsvg-convert -f png -w 256 -h 256 "$ICON" -o "$PNG" 2>/dev/null; then
+          echo "forge-avatar-sync: rsvg-convert failed; skipping"
+          rm -f "$PNG"
+          exit 0
+        fi
+        IMAGE=$(base64 -w 0 < "$PNG")
+        rm -f "$PNG"
+        DATA_URI="data:image/png;base64,$IMAGE"
         RESP=$(curl -sf --max-time 10 \
           -X POST "$FORGE_URL/api/v1/user/avatar" \
           -H "Authorization: token $TOKEN" \