feat: use stagex for bootstrapping

Pkgfile

@@ -3,8 +3,6 @@
 format: v1alpha2
 
 vars:
-  BOOTSTRAP: /bootstrap
-
   # renovate: datasource=git-tags extractVersion=^binutils-(?<version>.*)$ depName=git://sourceware.org/git/binutils-gdb.git
   binutils_version: 2_43_1
   binutils_sha256: 13f74202a3c4c51118b797a39ea4200d3f6cfbe224da6d1d95bb938480132dfd
@@ -51,5 +49,17 @@ vars:
   musl_sha256: a9a118bbe84d8764da0ea0d28b3ab3fae8477fc7e4085d90102b8596fc7c75e4
   musl_sha512: 7bb7f7833923cd69c7a1a9b8a5f1784bfd5289663eb6061dcd43d583e45987df8a68a1be05d75cc1c88a3f5b610653d1a70f4a9cff4d8f7fd41ae73ee058c17c
 
+  # Stage(x) reproducibly built bootstrap toolchain. Please update when necessary to build newer toolchain
+  stagex_binutils_sha256: eff721a796fdfba8c34e21a487b0e376fb55ca2633524926998f1660fbb810de
+  stagex_busybox_sha256: 3d128909dbc8e7b6c4b8c3c31f4583f01a307907ea179934bb42c4ef056c7efd
+  stagex_diffutils_sha256: df935bd3df054427c559c5008f2e5de12419725c1331d1f863380a6015a1d0e2
+  stagex_file_sha256: f1053114ea2ef35dc04bd1d1f1572c3f1b86e3d57dffda99faac9e191bd7ab5d
+  stagex_gcc_sha256: 49ea63c81c65f8be25c242b7e64f2758b23effdaafb458b5862d0f23ec803075
+  stagex_go_sha256: 6bb49db5a2d23cddcd9327933a4fcb6136882e72ec2be35730c06b1a420d7b17
+  stagex_make_sha256: ad81793d21d9778421925085c52734fdcca443957ade4f9bb80e4032b88252db
+  stagex_musl_sha256: d7f6c365f5724c65cadb2b96d9f594e46132ceb366174c89dbf7554897f2bc53
+  stagex_perl_sha256: 5fd2b41b5541b1b5de887f1cd47c56f3c59a268fa08096661eeff111d147234c
+  stagex_texinfo_sha256: ddaf6c83f6577335813eafcd601c9d0ffb698ebb991e9203eeb95d0122b45116
+
 labels:
   org.opencontainers.image.source: https://github.com/siderolabs/toolchain

binutils/pkg.yaml

@@ -1,18 +1,15 @@
 name: binutils
-install:
-  - make
-  - texinfo
+variant: scratch
 dependencies:
-  - stage: bootstrap
-  - stage: musl
+  - stage: c
+  - image: "stagex/perl@sha256:{{ .stagex_perl_sha256 }}"
+  - image: "stagex/texinfo@sha256:{{ .stagex_texinfo_sha256 }}"
 steps:
   - sources:
       - url: https://ftp.gnu.org/gnu/binutils/binutils-{{ .binutils_version | replace "_" "." }}.tar.xz
         destination: binutils.tar.xz
         sha256: "{{ .binutils_sha256 }}"
         sha512: "{{ .binutils_sha512 }}"
-    env:
-      PATH: "{{ .BOOTSTRAP }}/bin:{{ .PATH }}"
     prepare:
       - |
         tar -xJf binutils.tar.xz --strip-components=1
@@ -23,8 +20,7 @@ steps:
         ../configure \
         --build=${BUILD} \
         --host=${HOST} \
-        --prefix=${TOOLCHAIN} \
-        --with-lib-path=${TOOLCHAIN}/lib \
+        --prefix=/usr \
         --disable-nls \
         --disable-gprofng \
         --disable-werror \
@@ -37,11 +33,11 @@ steps:
     install:
       - |
         cd build
-        make install
+        make DESTDIR=/rootfs install
         make -C ld clean
         make -C ld LIB_PATH=/usr/lib:/lib
-        cp -v ld/ld-new ${TOOLCHAIN}/bin
-        rm -rf ${TOOLCHAIN}/share/man
+        cp -v ld/ld-new /rootfs/bin
+        rm -rf /rootfs/share/man
 finalize:
-  - from: "{{ .TOOLCHAIN }}"
-    to: "{{ .TOOLCHAIN }}"
+  - from: /rootfs
+    to: /

c/pkg.yaml

@@ -0,0 +1,11 @@
+name: c
+variant: scratch
+dependencies:
+  - image: "stagex/binutils@sha256:{{ .stagex_binutils_sha256 }}"
+  - image: "stagex/busybox@sha256:{{ .stagex_busybox_sha256 }}"
+  - image: "stagex/gcc@sha256:{{ .stagex_gcc_sha256 }}"
+  - image: "stagex/make@sha256:{{ .stagex_make_sha256 }}"
+  - image: "stagex/musl@sha256:{{ .stagex_musl_sha256 }}"
+finalize:
+  - from: /
+    to: /

gcc/pkg.yaml

@@ -1,9 +1,7 @@
 name: gcc
-install:
-  - make
+variant: scratch
 dependencies:
-  - stage: bootstrap
-  - stage: musl
+  - stage: c
 steps:
   - sources:
       - url: https://ftp.gnu.org/gnu/gcc/gcc-{{ .gcc_version }}/gcc-{{ .gcc_version }}.tar.xz
@@ -22,8 +20,6 @@ steps:
         destination: mpc.tar.gz
         sha256: "{{ .mpc_sha256 }}"
         sha512: "{{ .mpc_sha512 }}"
-    env:
-      PATH: "{{ .BOOTSTRAP }}/bin:{{ .PATH }}"
     prepare:
       - |
         mkdir mpfr
@@ -41,28 +37,10 @@ steps:
 
         cat ../gcc/limitx.h ../gcc/glimits.h ../gcc/limity.h > `dirname $(gcc -print-libgcc-file-name)`/include-fixed/limits.h
 
-        for file in ../gcc/config/{aarch64/aarch64-linux,arm/{linux-eabi,linux-elf},linux,i386/linux{,64}}.h; do
-            cp -uv $file{,.orig}
-            sed -e "s@/lib\(64\)\?\(32\)\?/ld@${TOOLCHAIN}&@g" \
-            -e "s@/usr@${TOOLCHAIN}@g" $file.orig > $file
-            cat >> $file <<EOF
-        #undef STANDARD_STARTFILE_PREFIX_1
-        #undef STANDARD_STARTFILE_PREFIX_2
-        #define STANDARD_STARTFILE_PREFIX_1 "${TOOLCHAIN}/lib/"
-        #define STANDARD_STARTFILE_PREFIX_2 ""
-        EOF
-            touch $file.orig
-        done
-
-        sed -e '/m64=/s/lib64/lib/' -i.orig ../gcc/config/i386/t-linux64
-        sed -e '/mabi.lp64=/s/lib64/lib/' -i.orig ../gcc/config/aarch64/t-aarch64-linux
-
         ../configure \
         --build=${BUILD} \
         --host=${HOST} \
-        --prefix=${TOOLCHAIN} \
-        --with-local-prefix=${TOOLCHAIN} \
-        --with-native-system-header-dir=${TOOLCHAIN}/include \
+        --prefix=/usr \
         --disable-multilib \
         --disable-nls \
         --enable-shared \
@@ -92,8 +70,8 @@ steps:
     install:
       - |
         cd build
-        make install-strip
-        ln -sv gcc ${TOOLCHAIN}/bin/cc
+        make DESTDIR=/rootfs install-strip
+        ln -sv gcc /rootfs/usr/bin/cc
 finalize:
-  - from: "{{ .TOOLCHAIN }}"
-    to: "{{ .TOOLCHAIN }}"
+  - from: /rootfs
+    to: /