diff --git a/debian/changelog b/debian/changelog
index aea88a95..82fa2237 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,7 @@
 llvm-toolchain-18 (1:18.1.1-2) UNRELEASED; urgency=medium
 
   * Build-depend on llvm-spirv-18 instead of llvm-spirv-17.
+  * Add a stage1 profile to disable curl, grpc and spirv.
 
  -- Matthias Klose <doko@debian.org>  Tue, 12 Mar 2024 18:21:05 +0100
 
diff --git a/debian/control b/debian/control
index 814daf19..2ff41452 100644
--- a/debian/control
+++ b/debian/control
@@ -29,11 +29,11 @@ Build-Depends: debhelper (>= 10.0), cmake, ninja-build,
     llvm-spirv-18 [amd64 arm64 armhf i386 ppc64 ppc64el riscv64 s390x] <!stage1> | hello [amd64 arm64 armhf i386 ppc64 ppc64el riscv64 s390x] <!stage1>,
     spirv-tools [linux-any] | hello [linux-any],
     wasi-libc | hello,
-    libcurl4-openssl-dev | libcurl-dev,
-    libgrpc++-dev [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x],
-    protobuf-compiler-grpc [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x],
-    libprotobuf-dev [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x],
-    protobuf-compiler [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x]
+    libcurl4-openssl-dev <!stage1> | libcurl-dev <!stage1>,
+    libgrpc++-dev [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x] <!stage1>,
+    protobuf-compiler-grpc [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x] <!stage1>,
+    libprotobuf-dev [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x] <!stage1>,
+    protobuf-compiler [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x] <!stage1>,
 Build-Conflicts: oprofile
 Standards-Version: 4.6.2
 Homepage: https://www.llvm.org/
diff --git a/debian/control.in b/debian/control.in
index 453fe1b2..672e748c 100644
--- a/debian/control.in
+++ b/debian/control.in
@@ -29,11 +29,11 @@ Build-Depends: debhelper (>= 10.0), cmake, ninja-build,
     llvm-spirv-18 [amd64 arm64 armhf i386 ppc64 ppc64el riscv64 s390x] <!stage1> | hello [amd64 arm64 armhf i386 ppc64 ppc64el riscv64 s390x] <!stage1>,
     spirv-tools [linux-any] | hello [linux-any],
     wasi-libc | hello,
-    libcurl4-openssl-dev | libcurl-dev,
-    libgrpc++-dev [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x],
-    protobuf-compiler-grpc [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x],
-    libprotobuf-dev [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x],
-    protobuf-compiler [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x]
+    libcurl4-openssl-dev <!stage1> | libcurl-dev <!stage1>,
+    libgrpc++-dev [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x] <!stage1>,
+    protobuf-compiler-grpc [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x] <!stage1>,
+    libprotobuf-dev [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x] <!stage1>,
+    protobuf-compiler [amd64 arm64 armel armhf mips64el mipsel ppc64 ppc64el powerpc riscv64 s390x] <!stage1>,
 Build-Conflicts: oprofile
 Standards-Version: 4.6.2
 Homepage: https://www.llvm.org/
diff --git a/debian/rules b/debian/rules
index 22f63f8b..8d1489bc 100755
--- a/debian/rules
+++ b/debian/rules
@@ -159,6 +159,7 @@ STAGE_2_CMAKE_EXTRA += -DCLANG_SYSTEMZ_DEFAULT_ARCH=$(ZARCH)
 # clangd remote index support requires GRPC & protobuf.
 # Enable if minimum tested versions are available.
 CLANGD_GRPC_INSTALLED=no
+ifeq (,$(filter stage1, $(DEB_BUILD_PROFILES)))
 ifeq ($(shell v=$$(dpkg-query -W -f '$${Version}' libgrpc++-dev 2>/dev/null); if [ -z "$$v" ]; then echo 1; else dpkg --compare-versions $$v gt 1.30.0; echo $$?; fi),0)
 ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' protobuf-compiler-grpc) gt 1.30.0; echo $$?),0)
 ifeq ($(shell dpkg --compare-versions $(shell dpkg-query -W -f '$${Version}' libprotobuf-dev) gt 3.12.0; echo $$?),0)
@@ -169,6 +170,7 @@ endif
 endif
 endif
 endif
+endif
 
 export CC=gcc-$(GCC_VERSION)
 export CXX=g++-$(GCC_VERSION)
@@ -267,6 +269,9 @@ else
 	control_vars = '-Vdep:devlibs=libstdc++6-$(GCC_VERSION)-dev'
 endif
 
+ifneq (,$(filter stage1, $(DEB_BUILD_PROFILES)))
+	LLVM_SPIRV_INSTALLED = no
+else
 LLVM_SPIRV_VERSION := $(LLVM_VERSION)
 LLVM_SPIRV := $(shell bash -c "command -v llvm-spirv-$(LLVM_SPIRV_VERSION)" 2>/dev/null)
 ifndef LLVM_SPIRV
@@ -288,6 +293,7 @@ else
 		LLVM_SPIRV_INSTALLED = yes
 	endif
 endif
+endif
 
 LIBCLC_TARGETS_TO_BUILD=amdgcn--;amdgcn--amdhsa;amdgcn-mesa-mesa3d;r600--;nvptx--;nvptx64--;nvptx--nvidiacl;nvptx64--nvidiacl
 LIBCLC_LLVM_SPIRV =
@@ -768,7 +774,7 @@ endif
 	-DLLVM_INCLUDE_GO_TESTS=OFF \
 	-DLLVM_USE_RELATIVE_PATHS_IN_FILES=ON \
 	-DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON \
-	-DLLVM_ENABLE_CURL=ON \
+	-DLLVM_ENABLE_CURL=$(if $(filter stage1, $(DEB_BUILD_PROFILES)),OFF,ON) \
 	-DLLVM_USE_RELATIVE_PATHS_IN_DEBUG_INFO=ON \
 	-DCLANG_PLUGIN_SUPPORT=OFF \
 	-DCLANG_BUILD_EXAMPLES=OFF \
@@ -821,7 +827,7 @@ endif
 	-DBOOTSTRAP_LLVM_POLLY_LINK_INTO_TOOLS=ON \
 	-DBOOTSTRAP_LLVM_EXPERIMENTAL_TARGETS_TO_BUILD="M68k;Xtensa" \
 	-DBOOTSTRAP_LLVM_LINK_LLVM_DYLIB=ON \
-	-DBOOTSTRAP_LLVM_ENABLE_CURL=ON \
+	-DBOOTSTRAP_LLVM_ENABLE_CURL=$(if $(filter stage1, $(DEB_BUILD_PROFILES)),OFF,ON) \
 	-DBOOTSTRAP_CLANG_LINK_CLANG_DYLIB=ON \
 	-DBOOTSTRAP_LIBCLANG_LIBRARY_VERSION=$(SONAME_EXT) \
 	-DBOOTSTRAP_LIBCXX_INSTALL_EXPERIMENTAL_LIBRARY=ON \