fedora: Update trial run of bundled go deps

distro/fedora/dms-git.spec

@@ -3,6 +3,7 @@
 %global debug_package %{nil}
 %global version {{{ git_repo_version }}}
 %global pkg_summary DankMaterialShell - Material 3 inspired shell for Wayland compositors
+%global go_toolchain_version 1.25.7
 
 Name:           dms
 Epoch:          2
@@ -14,12 +15,12 @@ License:        MIT
 URL:            https://github.com/AvengeMedia/DankMaterialShell
 VCS:            {{{ git_repo_vcs }}}
 Source0:        {{{ git_repo_pack }}}
+Source1:        https://go.dev/dl/go%{go_toolchain_version}.linux-amd64.tar.gz
+Source2:        https://go.dev/dl/go%{go_toolchain_version}.linux-arm64.tar.gz
 
 BuildRequires:  git-core
 BuildRequires:  gzip
-BuildRequires:  golang >= 1.24
 BuildRequires:  make
-BuildRequires:  wget
 BuildRequires:  systemd-rpm-macros
 
 # Core requirements
@@ -65,12 +66,27 @@ Provides native DBus bindings, NetworkManager integration, and system utilities.
 VERSION="%{version}"
 COMMIT=$(echo "%{version}" | grep -oP '[a-f0-9]{7,}' | head -n1 || echo "unknown")
 
-# Pin go.mod and vendor/modules.txt to the installed Go toolchain version
-GO_INSTALLED=$(go version | grep -oP 'go\K[0-9]+\.[0-9]+')
-sed -i "s/^go [0-9]\+\.[0-9]\+\(\.[0-9]*\)\?$/go ${GO_INSTALLED}/" core/go.mod
-# Only patch vendor/modules.txt when a vendor dir exists (OBS/offline builds)
-[ -f core/vendor/modules.txt ] && \
-  sed -i "s/^\(## explicit; go \)[0-9]\+\.[0-9]\+\(\.[0-9]*\)\?$/\1${GO_INSTALLED}/" core/vendor/modules.txt || true
+# Use pinned bundled Go toolchain (deterministic across chroots)
+case "%{_arch}" in
+  x86_64)
+    GO_TARBALL="%{_sourcedir}/go%{go_toolchain_version}.linux-amd64.tar.gz"
+    ;;
+  aarch64)
+    GO_TARBALL="%{_sourcedir}/go%{go_toolchain_version}.linux-arm64.tar.gz"
+    ;;
+  *)
+    echo "Unsupported architecture for bundled Go: %{_arch}"
+    exit 1
+    ;;
+esac
+
+rm -rf .go
+tar -xzf "$GO_TARBALL"
+mv go .go
+export GOROOT="$PWD/.go"
+export PATH="$GOROOT/bin:$PATH"
+export GOTOOLCHAIN=local
+go version
 
 cd core
 make dist VERSION="$VERSION" COMMIT="$COMMIT"