local/patches/fs/force-vendored-libuv.patch

@@ -0,0 +1,19 @@
+diff --git a/configure b/configure
+--- a/configure
++++ b/configure
+@@ -11,6 +11,15 @@
+ PKG_TEST_HEADER="<uv.h>"
+ PKG_LIBS="-luv"
+ 
++# bincraft patch: force the vendored static libuv so the resulting binary
++# is self-contained. fs configure otherwise links system libuv whenever
++# pkg-config finds libuv-devel (installed as a build-time sysreq), yielding
++# an fs.so with NEEDED libuv.so.1 that fails to dyn.load on machines lacking
++# runtime libuv (install.packages/renv do not install SystemRequirements).
++echo "Building static libuv (bincraft: forced vendored)" 1>&2
++cp -f src/Makevars.vendor src/Makevars
++exit 0
++
+ # Use pkg-config if available
+ if [ `command -v pkg-config` ]; then
+   PKGCONFIG_CFLAGS=`pkg-config --cflags --silence-errors ${PKG_CONFIG_NAME}`

local/patches/registry.json

@@ -8,5 +8,15 @@
     "makevars": {},
     "patch": "RcppParallel/disable-tbb.patch",
     "reason": "bundled Intel TBB build hangs/fails on musl (Alpine) and newer toolchains (g++ 15 on ubuntu-2604); patch unsets USE_TBB and forces -DRCPP_PARALLEL_USE_TBB=0 so RcppParallel skips the bundled build and uses the TinyThread backend"
+  },
+  {
+    "package": "fs",
+    "versions": "*",
+    "platforms": ["*"],
+    "env": {},
+    "configure_args": [],
+    "makevars": {},
+    "patch": "fs/force-vendored-libuv.patch",
+    "reason": "fs 2.x configure links system libuv whenever pkg-config finds libuv-devel (installed as a build-time sysreq), producing an fs.so with NEEDED libuv.so.1. That binary fails to dyn.load on consumer machines lacking runtime libuv, because install.packages/renv do not install SystemRequirements (only pak does, and only in the build container). The patch short-circuits configure to copy src/Makevars.vendor and build the bundled static libuv (needs cmake) so the binary is self-contained on every platform. An env/pkg-config override was tried first but the rebuilt binary still linked libuv.so.1, so a source patch is used instead."
   }
 ]