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doc: Update Guix bootstrap status. 

* doc/mes.texi (Bootstrappable Builds): Add reference to Guix.
(Reduced Binary Seed Bootstrap): Add node and section header.
(Scheme-only Bootsrap): New section.
(Full Source Bootstrap): Add node and section header.  Some updates.
(Stage0): Add node and section header.
(M2-Planet): New section.
(The Mes Bootstrap Process): Fix typos, update to current Guix reduced
binary seed bootstrap status.
* doc/images/gcc-mesboot-graph.dot: Regenerate.
This commit is contained in:
Jan (janneke) Nieuwenhuizen 2022-04-30 12:31:57 +02:00
parent 28a828ff4d
commit d4589b6f0d
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GPG Key ID: F3C1A0D9C1D65273
2 changed files with 176 additions and 145 deletions
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224
doc/images/gcc-mesboot-graph.dot
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@ -1,123 +1,107 @@
digraph "Guix bag" {
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"/gnu/store/r7bbw2ywmgqp6m5a1hp0fs4lhc51w3sq-bootstrap-mes-0.drv" [label = "bootstrap-mes@0", shape = box, fontname = sans];
"/gnu/store/jrf5jckbwk949npav1p62vgcg95lr4mx-gash-boot-0.2.0.drv" [label = "gash-boot@0.2.0", shape = box, fontname = sans];
"/gnu/store/jrf5jckbwk949npav1p62vgcg95lr4mx-gash-boot-0.2.0.drv" -> "/gnu/store/w77kjhmj4c4sncndnh0kvf0jfpwpradm-bootar-1a.drv" [color = darkviolet];
"/gnu/store/jrf5jckbwk949npav1p62vgcg95lr4mx-gash-boot-0.2.0.drv" -> "/gnu/store/qs4086i9b9q0b74l4wjqgzbdc3c0f58f-guile-bootstrap-2.0.drv" [color = darkviolet];
"/gnu/store/w77kjhmj4c4sncndnh0kvf0jfpwpradm-bootar-1a.drv" [label = "bootar@1a", shape = box, fontname = sans];
"/gnu/store/w77kjhmj4c4sncndnh0kvf0jfpwpradm-bootar-1a.drv" -> "/gnu/store/qs4086i9b9q0b74l4wjqgzbdc3c0f58f-guile-bootstrap-2.0.drv" [color = blue];
"/gnu/store/qs4086i9b9q0b74l4wjqgzbdc3c0f58f-guile-bootstrap-2.0.drv" [label = "guile-bootstrap@2.0", shape = box, fontname = sans];
"/gnu/store/a6nbjivhxp65wqj5s8rz0fnmwzqxmhry-bootstrap-mescc-tools-0.5.2.drv" [label = "bootstrap-mescc-tools@0.5.2", shape = box, fontname = sans];
"/gnu/store/yl8gsvanaj8wgngmgc4an06g5ybadad2-gash-utils-boot-0.1.0.drv" [label = "gash-utils-boot@0.1.0", shape = box, fontname = sans];
"/gnu/store/yl8gsvanaj8wgngmgc4an06g5ybadad2-gash-utils-boot-0.1.0.drv" -> "/gnu/store/w77kjhmj4c4sncndnh0kvf0jfpwpradm-bootar-1a.drv" [color = blue];
"/gnu/store/yl8gsvanaj8wgngmgc4an06g5ybadad2-gash-utils-boot-0.1.0.drv" -> "/gnu/store/jrf5jckbwk949npav1p62vgcg95lr4mx-gash-boot-0.2.0.drv" [color = blue];
"/gnu/store/yl8gsvanaj8wgngmgc4an06g5ybadad2-gash-utils-boot-0.1.0.drv" -> "/gnu/store/qs4086i9b9q0b74l4wjqgzbdc3c0f58f-guile-bootstrap-2.0.drv" [color = blue];
"/gnu/store/yy8bxckakx5f4rpvqfggrfy21y7bn53g-bzip2-mesboot-1.0.8.drv" [label = "bzip2-mesboot@1.0.8", shape = box, fontname = sans];
"/gnu/store/yy8bxckakx5f4rpvqfggrfy21y7bn53g-bzip2-mesboot-1.0.8.drv" -> "/gnu/store/hlm2wxhh0irfjnds4i86imdqi13iwj81-make-mesboot0-3.80.drv" [color = blue];
"/gnu/store/yy8bxckakx5f4rpvqfggrfy21y7bn53g-bzip2-mesboot-1.0.8.drv" -> "/gnu/store/0izhx7j1n6lcpcbvy9i9pyjkzjpbxrcj-tcc-boot0-0.9.26-1103-g6e62e0e.drv" [color = blue];
"/gnu/store/yy8bxckakx5f4rpvqfggrfy21y7bn53g-bzip2-mesboot-1.0.8.drv" -> "/gnu/store/jrf5jckbwk949npav1p62vgcg95lr4mx-gash-boot-0.2.0.drv" [color = blue];
"/gnu/store/yy8bxckakx5f4rpvqfggrfy21y7bn53g-bzip2-mesboot-1.0.8.drv" -> "/gnu/store/yl8gsvanaj8wgngmgc4an06g5ybadad2-gash-utils-boot-0.1.0.drv" [color = blue];
"/gnu/store/yy8bxckakx5f4rpvqfggrfy21y7bn53g-bzip2-mesboot-1.0.8.drv" -> "/gnu/store/w77kjhmj4c4sncndnh0kvf0jfpwpradm-bootar-1a.drv" [color = blue];
"/gnu/store/yy8bxckakx5f4rpvqfggrfy21y7bn53g-bzip2-mesboot-1.0.8.drv" -> "/gnu/store/qs4086i9b9q0b74l4wjqgzbdc3c0f58f-guile-bootstrap-2.0.drv" [color = blue];
"/gnu/store/qyphha8i1pylf10pm76400kq5d07zsvr-gzip-mesboot-1.2.4.drv" [label = "gzip-mesboot@1.2.4", shape = box, fontname = sans];
"/gnu/store/qyphha8i1pylf10pm76400kq5d07zsvr-gzip-mesboot-1.2.4.drv" -> "/gnu/store/0izhx7j1n6lcpcbvy9i9pyjkzjpbxrcj-tcc-boot0-0.9.26-1103-g6e62e0e.drv" [color = red];
"/gnu/store/qyphha8i1pylf10pm76400kq5d07zsvr-gzip-mesboot-1.2.4.drv" -> "/gnu/store/jrf5jckbwk949npav1p62vgcg95lr4mx-gash-boot-0.2.0.drv" [color = red];
"/gnu/store/qyphha8i1pylf10pm76400kq5d07zsvr-gzip-mesboot-1.2.4.drv" -> "/gnu/store/yl8gsvanaj8wgngmgc4an06g5ybadad2-gash-utils-boot-0.1.0.drv" [color = red];
"/gnu/store/qyphha8i1pylf10pm76400kq5d07zsvr-gzip-mesboot-1.2.4.drv" -> "/gnu/store/w77kjhmj4c4sncndnh0kvf0jfpwpradm-bootar-1a.drv" [color = red];
"/gnu/store/qyphha8i1pylf10pm76400kq5d07zsvr-gzip-mesboot-1.2.4.drv" -> "/gnu/store/qs4086i9b9q0b74l4wjqgzbdc3c0f58f-guile-bootstrap-2.0.drv" [color = red];
"/gnu/store/vn42sjmbh0zr9wn9lnbsdrxlh1zihx50-patch-mesboot-2.5.9.drv" [label = "patch-mesboot@2.5.9", shape = box, fontname = sans];
"/gnu/store/vn42sjmbh0zr9wn9lnbsdrxlh1zihx50-patch-mesboot-2.5.9.drv" -> "/gnu/store/hlm2wxhh0irfjnds4i86imdqi13iwj81-make-mesboot0-3.80.drv" [color = darkseagreen];
"/gnu/store/vn42sjmbh0zr9wn9lnbsdrxlh1zihx50-patch-mesboot-2.5.9.drv" -> "/gnu/store/0izhx7j1n6lcpcbvy9i9pyjkzjpbxrcj-tcc-boot0-0.9.26-1103-g6e62e0e.drv" [color = darkseagreen];
"/gnu/store/vn42sjmbh0zr9wn9lnbsdrxlh1zihx50-patch-mesboot-2.5.9.drv" -> "/gnu/store/jrf5jckbwk949npav1p62vgcg95lr4mx-gash-boot-0.2.0.drv" [color = darkseagreen];
"/gnu/store/vn42sjmbh0zr9wn9lnbsdrxlh1zihx50-patch-mesboot-2.5.9.drv" -> "/gnu/store/yl8gsvanaj8wgngmgc4an06g5ybadad2-gash-utils-boot-0.1.0.drv" [color = darkseagreen];
"/gnu/store/vn42sjmbh0zr9wn9lnbsdrxlh1zihx50-patch-mesboot-2.5.9.drv" -> "/gnu/store/w77kjhmj4c4sncndnh0kvf0jfpwpradm-bootar-1a.drv" [color = darkseagreen];
"/gnu/store/vn42sjmbh0zr9wn9lnbsdrxlh1zihx50-patch-mesboot-2.5.9.drv" -> "/gnu/store/qs4086i9b9q0b74l4wjqgzbdc3c0f58f-guile-bootstrap-2.0.drv" [color = darkseagreen];
"/gnu/store/16w6l2c80hh98kfykal9hpbm93cscbcg-sed-mesboot0-1.18.drv" [label = "sed-mesboot0@1.18", shape = box, fontname = sans];
"/gnu/store/16w6l2c80hh98kfykal9hpbm93cscbcg-sed-mesboot0-1.18.drv" -> "/gnu/store/hlm2wxhh0irfjnds4i86imdqi13iwj81-make-mesboot0-3.80.drv" [color = darkgoldenrod];
"/gnu/store/16w6l2c80hh98kfykal9hpbm93cscbcg-sed-mesboot0-1.18.drv" -> "/gnu/store/0izhx7j1n6lcpcbvy9i9pyjkzjpbxrcj-tcc-boot0-0.9.26-1103-g6e62e0e.drv" [color = darkgoldenrod];
"/gnu/store/16w6l2c80hh98kfykal9hpbm93cscbcg-sed-mesboot0-1.18.drv" -> "/gnu/store/jrf5jckbwk949npav1p62vgcg95lr4mx-gash-boot-0.2.0.drv" [color = darkgoldenrod];
"/gnu/store/16w6l2c80hh98kfykal9hpbm93cscbcg-sed-mesboot0-1.18.drv" -> "/gnu/store/yl8gsvanaj8wgngmgc4an06g5ybadad2-gash-utils-boot-0.1.0.drv" [color = darkgoldenrod];
"/gnu/store/16w6l2c80hh98kfykal9hpbm93cscbcg-sed-mesboot0-1.18.drv" -> "/gnu/store/w77kjhmj4c4sncndnh0kvf0jfpwpradm-bootar-1a.drv" [color = darkgoldenrod];
"/gnu/store/16w6l2c80hh98kfykal9hpbm93cscbcg-sed-mesboot0-1.18.drv" -> "/gnu/store/qs4086i9b9q0b74l4wjqgzbdc3c0f58f-guile-bootstrap-2.0.drv" [color = darkgoldenrod];
"/gnu/store/h1m81zsyi3l4yd9r7pd3ffanb61pszxy-tcc-boot-0.9.27.drv" [label = "tcc-boot@0.9.27", shape = box, fontname = sans];
"/gnu/store/h1m81zsyi3l4yd9r7pd3ffanb61pszxy-tcc-boot-0.9.27.drv" -> "/gnu/store/yy8bxckakx5f4rpvqfggrfy21y7bn53g-bzip2-mesboot-1.0.8.drv" [color = blue];
"/gnu/store/h1m81zsyi3l4yd9r7pd3ffanb61pszxy-tcc-boot-0.9.27.drv" -> "/gnu/store/hlm2wxhh0irfjnds4i86imdqi13iwj81-make-mesboot0-3.80.drv" [color = blue];
"/gnu/store/h1m81zsyi3l4yd9r7pd3ffanb61pszxy-tcc-boot-0.9.27.drv" -> "/gnu/store/0izhx7j1n6lcpcbvy9i9pyjkzjpbxrcj-tcc-boot0-0.9.26-1103-g6e62e0e.drv" [color = blue];
"/gnu/store/h1m81zsyi3l4yd9r7pd3ffanb61pszxy-tcc-boot-0.9.27.drv" -> "/gnu/store/jrf5jckbwk949npav1p62vgcg95lr4mx-gash-boot-0.2.0.drv" [color = blue];
"/gnu/store/h1m81zsyi3l4yd9r7pd3ffanb61pszxy-tcc-boot-0.9.27.drv" -> "/gnu/store/yl8gsvanaj8wgngmgc4an06g5ybadad2-gash-utils-boot-0.1.0.drv" [color = blue];
"/gnu/store/h1m81zsyi3l4yd9r7pd3ffanb61pszxy-tcc-boot-0.9.27.drv" -> "/gnu/store/w77kjhmj4c4sncndnh0kvf0jfpwpradm-bootar-1a.drv" [color = blue];
"/gnu/store/h1m81zsyi3l4yd9r7pd3ffanb61pszxy-tcc-boot-0.9.27.drv" -> "/gnu/store/qs4086i9b9q0b74l4wjqgzbdc3c0f58f-guile-bootstrap-2.0.drv" [color = blue];
}

97
doc/mes.texi
View File

@ -72,9 +72,16 @@ Software Freedom
* Reproducible Builds:: Reproducibility and free software.
* Bootstrappable Builds:: The freedom to build a software without binary seed.
* Full Source Bootstrap:: Software dependencies worthy of GNU.
* Reduced Binary Seed Bootstrap:: Guix reduces bootstrap binaries with 50%.
* Scheme-only Bootsrap:: Guix reduced bootstrap binaries to 25%.
* Full Source Bootstrap:: A bootstrap worthy of GNU.
* LISP as Maxwell's Equations of Software:: Auditable elegance.
Full Source Bootstrap
* Stage0:: The Magical Self-Hosting Hex Assembler.
* M2-Planet:: A Sub-C bootstrap compiler.
Installation
* Requirements:: Software needed to build and run Mes.
@ -187,7 +194,9 @@ Freedom 1.
@menu
* Reproducible Builds:: Reproducibility and free software.
* Bootstrappable Builds:: The freedom to build a software without binary seed.
* Full Source Bootstrap:: Software dependencies worthy of GNU.
* Reduced Binary Seed Bootstrap:: Guix reduces bootstrap binaries with 50%.
* Scheme-only Bootsrap:: Guix reduced bootstrap binaries to 25%.
* Full Source Bootstrap:: A bootstrap worthy of GNU.
* LISP as Maxwell's Equations of Software:: Auditable elegance.
@end menu
@ -258,10 +267,11 @@ binary seed that all software distributions inject are the so called
@emph{bootstrap binary seed}. Bootstrap binaries are the initial binary
seeds that are used to start building the distribution.
The GNU Guix operating system, version 1.0 had a relatively small
closure of bootstrap binary seed: GNU binutils, GNU gcc, GNU Libc, GNU
Guile, and ``Static binaries'' (think: bash, bzip2, coreutils, gawk,
grep, gzip, patch, sed, tar, xz).
The GNU Guix operating system (@pxref{Top,,, guix, The GNU Guix
Manual}), version 1.0 had a relatively small closure of bootstrap binary
seed: GNU binutils, GNU gcc, GNU Libc, GNU Guile, and ``Static
binaries'' (think: bash, bzip2, coreutils, gawk, grep, gzip, patch, sed,
tar, xz).
@example
$ du -schx $(readlink $(guix build bootstrap-tarballs)/*)
@ -288,6 +298,9 @@ $ du -schx *
252M total
@end example
@node Reduced Binary Seed Bootstrap
@section Reduced Binary Seed Bootstrap
During the Guix 1.1 development series we managed to create the first
reduction by 50% of the Guix @emph{bootstrap binary seed}@footnote{See
@url{https://guix.gnu.org/blog/2019/guix-reduces-bootstrap-seed-by-50/}}.
@ -295,16 +308,37 @@ This was a very important step because the ~250MB @emph{seed} of binary
code was practically non-auditable, which makes it hard to establish
what source code produced them.
@node Scheme-only Bootsrap
@section Scheme-only Bootstrap
The next step that Guix has taken is to replace the shell and all its
utilities with implementations in Guile Scheme, the @emph{Scheme-only
bootstrap}. This second halving of the boostrap binaries reduced their
size to 25% @footnote{See
@url{https://guix.gnu.org/en/blog/2020/guix-further-reduces-bootstrap-seed-to-25/}}.
Gash (@pxref{Gash,,, gash, The Gash manual}) is a POSIX-compatible shell
that replaces Bash, and it comes with Gash Utils which has minimalist
replacements for Awk, the GNU Core Utilities, Grep, Gzip, Sed, and Tar.
The rest of the bootstrap binary seeds that were removed are now built
from source.
@node Full Source Bootstrap
@section Full Source Bootstrap
@section Full Source Bootstrap
There is an obvious solution: we cannot allow any binary seeds in our
software stack. Not even in the bootstrap binary seed. Maybe that is a
bit too strong: we want to have the absolute minimum of binary seeds and
all binary seeds need to be inspectable and must be reviewed. How big
would the absolute minimal set be?
Reduction of binary seeds is great, but there is an obvious target: we
cannot allow any binary seeds in our software stack. Not even in the
bootstrap binary seed. Maybe that is a bit too strong: we want to have
the absolute minimum of binary seeds and all binary seeds need to be
inspectable and must be reviewed. How big would the absolute minimal
set be?
@subsection The Magical Self-Hosting Hex Assembler
@menu
* Stage0:: The Magical Self-Hosting Hex Assembler.
* M2-Planet:: A Sub-C bootstrap compiler.
@end menu
@node Stage0
@subsection Stage0
June 2016 I learnt about
@url{https://github.com/oriansj/stage0/,Stage0}. Jeremiah Orians
@ -409,6 +443,18 @@ nothing to all of the programs that our computer runs. Something that
seemed to be an impossible dream is suddenly starting to look like
``just a couple years of work''.
@node M2-Planet
@subsection M2-Planet
@url{https://github.com/oriansj/m2-planet/,M2-Planet} @footnote{The
PLAtform NEutral Transpiler}, when combined with
@url{https://savannah.gnu.org/projects/mescc-tools/, mescc-tools};
allows one to compile a subset of the C language into working binaries
with introspective steps inbetween. In 2021 M2-Planet with release
1.8.0 reached a level of maturity that allowed to build MesCC-Tools and
Mes. This allows for another reduction the Guix bootstrap binaries: mes
and mescc-tools can be removed.
@node LISP as Maxwell's Equations of Software
@section LISP as Maxwell's Equations of Software
@ -648,7 +694,7 @@ The Reduced Binary Seed bootstrap currently adopted by Guix@footnote{See
@file{gnu/packages/commencement.scm} in the @var{master} branch in Guix
git
@url{http://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/commencement.scm}}.
In its intiial form it is only available for x86-linux arm armhf-linux.
In its intiial form it is only available for x86-linux and armhf-linux.
Currently, it goes like this:
@ -687,19 +733,23 @@ Currently, it goes like this:
^
|
*
bootstrap-mescc-tools, bootstrap-mes (~10MB)
bootstrap-bash, bootstrap-coreutils&co, bootstrap-guile (~120MB)
gash-boot, gash-utils-boot
^
|
*
bootstrap-mescc-tools, bootstrap-mes (~12 MiB)
bootstrap-guile (~48 MiB)
@end verbatim
@c This graph is generated from wip-bootstrap, doing:
@c ~/src/guix/core-updates/pre-inst-env guix graph --type=bag -e '(@@ (gnu packages commencement) gcc-mesboot)' > doc/images/gcc-mesboot-graph.dot
@c guix graph --type=bag -e '(@@ (gnu packages commencement) gcc-core-mesboot0)' > doc/images/gcc-mesboot-graph.dot
@c dot -T png doc/images/gcc-mesboot-graph.dot > doc/images/gcc-mesboot-graph.png
Here's a generated dependency diagram to for the final bootstrap gcc
Here's a generated dependency diagram to for the initial bootstrap gcc
that builds the rest of Guix.
@image{images/gcc-mesboot-graph,2in,,Reference graph of the gcc-mesboot}
@image{images/gcc-mesboot-graph,2in,,Reference graph of the gcc-core-mesboot0}
Work is ongoing to remove these binary seeds that were intentionally
injected by our own doing as temporary shortcut
@ -707,17 +757,14 @@ injected by our own doing as temporary shortcut
bootstrap-mescc-tools (seed), bootstrap-mes (seed)
@end example
For now, these additional non-bootstrapped dependencies (i.e., binary
For now, this additional non-bootstrapped dependencies (i.e., binary
seeds) are taken for granted
@example
bootstrap-guile, bash, bzip2, coreutils, gawk, grep, gzip, patch, sed,
tar, xz
bootstrap-guile
@end example
Although we think these are less essential and thus less interesting
than the GNU toolchain triplet that we focussed on initially, our next
priority is to eleminate these one by one.
Our next priority is to eleminate these one by one.
@node Invoking mes
@section Invoking mes