Initial build

.gitlab-ci.yml

+---
+variables:
+  VERSION: '8.10.3'
+
+.template: &template
+  image: '${CI_REGISTRY}/nest/stage1:${BUILD_CPU}-workstation'
+  stage: 'build'
+  tags: ['nest']
+  script:
+    - 'emerge --sync'
+    - 'MAKEOPTS="$CI_HOST_MAKEOPTS" emerge -v -j1 --onlydeps "=dev-lang/ghc-${VERSION}"'
+    - 'BINPKG_COMPRESS=bzip2
+       CFLAGS=
+       FEATURES=-splitdebug
+       MAKEOPTS="$CI_HOST_MAKEOPTS"
+       PKGDIR=/tmp/packages
+       USE="ghcbootstrap ghcmakebinary"
+       ebuild "/var/db/repos/nest/dev-lang/ghc/ghc-${VERSION}.ebuild" package'
+    - 'cp "/tmp/packages/dev-lang/ghc/ghc-${VERSION}-1.xpak" "/nest/portage/distfiles/ghc-bin-${VERSION}-${CHOST}.tbz2"'
+
+'Build arm64':
+  <<: *template
+  variables:
+    BUILD_CPU: 'cortex-a72'
+    CHOST: 'aarch64-unknown-linux-gnu'

README.md

-Notes for when I have time to work on this:
-
-Build FROM a workstation image containing GHC already.  Build new GHC with `USE=ghcbootstrap ghcmakebinary`, `FEATURES=-splitdebug`, `CFLAGS=`, and `BINPKG_COMPRESS=bzip2`.  Copy the resulting package from `/nest/portage/packages` to `/nest/portage/distfiles` according to naming conventions in the GHC ebuild.
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