From 812f3a2cbab791853e9d71ab0e8ffe6feae2f9e9 Mon Sep 17 00:00:00 2001
From: "Suren A. Chilingaryan" <csa@suren.me>
Date: Sun, 27 Oct 2019 04:39:19 +0100
Subject: A bit of documentation

---
 README                      | 28 +++++++++++++++++++++++++---
 bootstrap/Dockerfile        |  3 +--
 builder/files/entrypoint.sh |  1 +
 3 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/README b/README
index 3bad064..772b905 100644
--- a/README
+++ b/README
@@ -1,6 +1,12 @@
 Proof of concept remote builder of clean Gentoo tree to provide on demand binary packages to desktop and
 laptop comptuers. 
 
+ - The configuration between builder and base system should not diverge even in minor details. Otherwise,
+ fancy effects may happen, particularly with perl/python/ruby. Virtuals for perl may offer a few versions
+ of perl package as a variants. When built, a specific version is registered in the binary package. Then,
+ this becomes hard dependency likely causing slot conflicts - host wants to update to 5.30 (unmasked), but 
+ some perl virtuals are for 5.28).
+ 
  - This will not work with presence of any significant unstable packet.
     * For instance, unstable firefox depends on unstable "nss-3.45". After update it is replaced in portage
     with "nss-3.46". Either full "nss-3.*" branch should be unmasked (which may bring its own problems or the
@@ -13,11 +19,11 @@ Idea:
     make bootstrap
     make check
     
- - Instantiate 'Builder', i.e. synced configs and portage tree
+ - Instantiate 'Builder', i.e. synced configs and portage tree (not needed, but kept for comptaibility)
     make builder
     make bash
 
- - Update builder to integrate latest configuration/portage changes
+ - Update builder to integrate latest configuration/portage changes (not needed, builder updates itself)
     make update
     make bash
     
@@ -25,6 +31,11 @@ Idea:
     make build
     make logs
 
+ - On major updates (perl/python/ruby especially), it could make sense to re-create builder from latest
+ gentoo snapshot and restart (many packages will be re-used, so little performance penalty). 
+   * Some binary packages may be built against old versions of library, etc. There is mechanism to trigger rebuilds,
+   but it would not work in this case?
+
     
  It will build packages and put it on the attached volume. The script is designed to run forever. 
   * If crashed it will start idle sleep until the connected user solves the problem and kills the 
@@ -39,7 +50,8 @@ Idea:
   
 
 Problems:
-  - This requires large and fast storage. I guess overlayfs2 based stuff is helpful.
+  - This requires large and fast storage. I guess overlayfs2 based stuff is helpful (as of Oct 2019,
+  overlayfs2 causes performance problems for eix-sync and should not be used) .
   
   - It also requires a novel kernel on the docker machine. For instance, QT would not
   compile on the old kernel. The library now may incorporate information about the minimum
@@ -49,3 +61,13 @@ Problems:
   However, such elf-header is (at the moment) also preventing it from linking. So, you not
   only unable to run a novel QT with old kenrel, but also compile it.
 
+
+Status:
+  - Builder is able to fully built my configuration. I can't use it due to divergence in perl versions (perl-5.30 unmasked)
+  Technically, it should work once perl-5.30 get stable.
+
+  - How system survives update of major subsystem (perl, python)? While it update automatically or shall we re-create builder?
+  In the later case, will it handle required re-builds automatically? Or do we need also to delete some binaries (at least 
+  paritally).
+ 
+  
\ No newline at end of file
diff --git a/bootstrap/Dockerfile b/bootstrap/Dockerfile
index afc13d1..d0cfc7e 100644
--- a/bootstrap/Dockerfile
+++ b/bootstrap/Dockerfile
@@ -44,7 +44,6 @@ RUN \
     rm -f /etc/portage/package.keywords/skip.keywords && \
     rm -f /etc/portage/package.keywords/xdeps-perl* && \
     rm -f /etc/portage/package.keywords/xdeps-firefox* && \
-    bash /etc/portage/scripts/gen-world-sets && \
-    bash /etc/portage/scripts/bootstrap/fix_deps.sh
+    bash /etc/portage/scripts/gen-world-sets
  
 CMD ["bash"]
diff --git a/builder/files/entrypoint.sh b/builder/files/entrypoint.sh
index 6685207..c6d32a3 100644
--- a/builder/files/entrypoint.sh
+++ b/builder/files/entrypoint.sh
@@ -8,4 +8,5 @@ if [ ! -d "/darklin/darklin4" ]; then
     cd "/darklin" && git clone http://darksoft.org/git/csa/devops/darkconf/darklin4.git || exit 1
 fi
 
+/bin/bash "/etc/portage/scripts/bootstrap/fix_deps.sh"
 /bin/bash "/etc/portage/scripts/bootstrap/builder.sh"
-- 
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