preparing the repository move to gitlab

Bruno Haible <[email protected]> Mon, 16 Apr 2018 00:54:41 +0200
Newsgroups gmane.lisp.clisp.devel
Message-ID <2413036.gFJmKCWtYx@omega> 
Hi all,

Thank you for the discussion and arguments re: "sourceforge miseries".

The outcome of that discussion was a plan to move to a hg repository
(on savannah.gnu.org) immediately and then to a git repository (on gitlab.com)
afterwards.

I couldn't resist but tried to do the conversion to git already. Like Sam
predicted, it was less complicated than the conversion cvs->hg in 2011.
We can now bypass the intermediate savannah step.

So, I created a git repository from the hg repository [1], set up a group
on gitlab.com [2], and set up a project 'clisp' inside this group [3].

What you can do now:

* Please look at the git repository, to find mistakes that I overlooked.
  Look at everything you care about - from the branch structure to the
  email addresses.
  - Download [1].
  $ mkdir clisp-git
  $ cd clisp-git
  $ tar xf .../clisp-initial-git.tar
  $ git checkout master

* Register at gitlab.com if you intend to commit changes or edit the wiki.
  Then tell me your user name (in private mail), so that I can add you to
  the clisp group.

Bruno

[1] https://www.dropbox.com/s/fzrphkpzx12p9pv/clisp-initial-git.tar?dl=0
[2] https://gitlab.com/gnu-clisp
[3] https://gitlab.com/gnu-clisp/clisp

===============================================================================

Conversion of a hg repository to git
====================================

1) Web search

  Experience report:
  https://hackernoon.com/migrating-140-000-commits-from-mercurial-to-git-5cf46f134261

  Conversion using 'fast-export':
  https://stackoverflow.com/questions/16037787/convert-mercurial-project-to-git
  https://git-scm.com/book/en/v2/Git-and-Other-Systems-Migrating-to-Git
  https://www.tikalk.com/posts/2017/06/12/convert-mercurial-project-to-git/
  https://www.daharveyjr.com/convert-a-mercurial-repository-to-git-using-hg-fast-export/

  Conversion using 'HG-Git':
  https://stackoverflow.com/questions/10710250/converting-mercurial-folder-to-a-git-repository?noredirect=1&lq=1
  http://hg-git.github.io/
  https://www.mercurial-scm.org/wiki/HgGit

2) Try 'fast-export' approach:
  https://github.com/frej/fast-export
  http://repo.or.cz/w/fast-export.git
  have identical code. So,
  $ git clone https://github.com/frej/fast-export
  or
  $ git clone git://repo.or.cz/fast-export.git

  $ mkdir repo-git
  $ cd repo-git
  $ git init
  $ ../fast-export/hg-fast-export.sh -r ../HGREPO/clisp



Issued 16738 commands
git-fast-import statistics:
---------------------------------------------------------------------
Alloc'd objects:     120000
Total objects:       115922 (     18111 duplicates                  )
      blobs  :        53419 (     17647 duplicates      30623 deltas of      52665 attempts)
      trees  :        45816 (       464 duplicates      41286 deltas of      41753 attempts)
      commits:        16687 (         0 duplicates          0 deltas of          0 attempts)
      tags   :            0 (         0 duplicates          0 deltas of          0 attempts)
Total branches:          86 (        91 loads     )
      marks:        1048576 (     16687 unique    )
      atoms:           3163
Memory total:          7985 KiB
       pools:          2360 KiB
     objects:          5625 KiB
---------------------------------------------------------------------
pack_report: getpagesize()            =       4096
pack_report: core.packedGitWindowSize = 1073741824
pack_report: core.packedGitLimit      = 8589934592
pack_report: pack_used_ctr            =       4463
pack_report: pack_mmap_calls          =        558
pack_report: pack_open_windows        =          5 /          5
pack_report: pack_mapped              = 4425919816 / 4425919816
---------------------------------------------------------------------

3) Create authors.txt (using ChangeLog and mail archives).

$ ../fast-export/hg-fast-export.sh -r ../HGREPO/clisp -A ../authors.txt

Result: 4 GB.
After 'git repack -a -d': 4 GB
After 'git gc --prune=now': 4 GB

Tags:

clisp_2_25_1-2001-04-06
clisp_2_25-2001-03-15
clisp_2_26-2001-05-23
clisp_2_27-2001-07-17
clisp_2_28-2002-03-03
clisp_2_30-2002-09-15
clisp_2_31-2003-09-01
clisp_2_32-2003-12-29
clisp_2_33_1-2004-05-22
clisp_2_33-2004-03-17
clisp_2_33_2-2004-06-02
clisp_2_33_84-2005-07-07
clisp_2_34-2005-07-20
clisp_2_35-2005-08-29
clisp_2_36-2005-12-04
clisp_2_37-2006-01-02
clisp_2_38-2006-01-24
clisp_2_39-2006-07-16
clisp_2_40-2006-09-23
clisp_2_41-2006-10-13
clisp_2_42-2007-10-16
clisp_2_43-2007-11-18
clisp_2_44-2008-02-02
clisp_2_45-2008-05-15
clisp_2_46-2008-07-02
clisp_2_47-2008-10-23
clisp_2_48-2009-07-28
clisp_2_49-2010-07-07
clisp_2_49_50-2017-03-19
clisp_2_49_51-2017-04-17
clisp_2_49_60-2017-06-25
clisp_2_49_90-2018-02-11
clisp_2_49_92-2018-02-18
devel
ffcall-1-10
ffcall-1-8
ffcall-1-9
libcharset_1_0
libcharset_1_1
libiconv_1_6_1
libiconv_1_7
post-threads1-merge
post-threads-merge
pre-threads-merge
release-1999-01-08
release-1999-07-22
release-2000-03-06
snap-1998-07-30
snap-1998-08-05
snap-1998-08-12
snap-1998-08-29

Branches:
clisp_2_29-2002-07-25
clisp_2_33-patched
clisp-2.50
jitc
master
release-2000-Feb
texlive2017
thread2
threads
threads1
unlabeled-1.10.2
unlabeled-1.1367.2
unlabeled-1.1367.2.1.2
unlabeled-1.1367.2.1.2.3.2
unlabeled-1.16.2
unlabeled-1.17.2
unlabeled-1.17.2.1.2
unlabeled-1.174.2
unlabeled-1.174.2.1.2
unlabeled-1.177.2
unlabeled-1.18.2
unlabeled-1.20.2
unlabeled-1.22.2
unlabeled-1.241.2
unlabeled-1.25.2
unlabeled-1.259.2
unlabeled-1.259.2.1.2
unlabeled-1.259.2.1.2.1.4
unlabeled-1.33.2
unlabeled-1.54.2
unlabeled-1.54.2.1.2
unlabeled-1.55.2
unlabeled-1.70.2
unlabeled-1.70.2.2.2
unlabeled-1.71.2

4) Find large blobs:
https://stackoverflow.com/questions/10622179/how-to-find-identify-large-files-commits-in-git-history
https://gist.github.com/magnetikonline/dd5837d597722c9c2d5dfa16d8efe5b9

Found 209 copies of impnotes.html, each ca. 4 MB large -> 800 MB of impnotes.html (uncompressed).
Found 9901 copies of src/ChangeLog, each ca. 1 MB large on average -> 10 GB of src/ChangeLog (uncompressed).

5) What if I eliminate the ChangeLog?

$ java -jar ~/Downloads/bfg-1.13.0.jar --delete-files ChangeLog /media/develdata/devel/CLISP/clisp-git2
Result: 4.2 GB
After 'git repack -a -d': 809 MB
After 'git gc --prune=now': 809 MB
After 'git reflog expire --expire=now --all && git gc --prune=now --aggressive': 51 MB

6) What if I eliminate a dummy file instead?

$ java -jar ~/Downloads/bfg-1.13.0.jar --delete-files xyzzy /media/develdata/devel/CLISP/clisp-git2
Result: 4 GB
After 'git repack -a -d': 3.9 GB
After 'git gc --prune=now': 3.9 GB
After 'git reflog expire --expire=now --all && git gc --prune=now --aggressive': 55 MB

7) What is the effect of just 'git gc --prune=now --aggressive' ?
Result: 55 MB

8) Create branches.txt and tags.txt.

$ ../fast-export/hg-fast-export.sh -r ../HGREPO/clisp -A ../authors.txt -B ../branches.txt -T ../tags.txt

9) Note: The tags.txt file is ignored. The output ends with:
Exporting tag [devel] at [hg r0] [git :1]
Exporting tag [snap-1998-07-30] at [hg r24] [git :25]
Exporting tag [snap-1998-08-05] at [hg r39] [git :40]
Exporting tag [snap-1998-08-12] at [hg r54] [git :55]
Exporting tag [snap-1998-08-29] at [hg r71] [git :72]
Exporting tag [release-1999-01-08] at [hg r365] [git :366]
Exporting tag [release-1999-07-22] at [hg r1194] [git :1195]
Exporting tag [release-2000-03-06] at [hg r1238] [git :1239]
Exporting tag [libcharset_1_0] at [hg r1958] [git :1959]
Exporting tag [libiconv_1_6_1] at [hg r1959] [git :1960]
Exporting tag [clisp_2_25-2001-03-15] at [hg r1983] [git :1984]
Exporting tag [libcharset_1_1] at [hg r2375] [git :2376]
Exporting tag [libiconv_1_7] at [hg r2399] [git :2400]
Exporting tag [clisp_2_25_1-2001-04-06] at [hg r3749] [git :3750]
Exporting tag [clisp_2_26-2001-05-23] at [hg r3750] [git :3751]
Exporting tag [clisp_2_27-2001-07-17] at [hg r3751] [git :3752]
Exporting tag [clisp_2_28-2002-03-03] at [hg r3752] [git :3753]
Exporting tag [ffcall-1-8] at [hg r3753] [git :3754]
Exporting tag [clisp_2_30-2002-09-15] at [hg r3954] [git :3955]
Exporting tag [clisp_2_31-2003-09-01] at [hg r5494] [git :5495]
Exporting tag [clisp_2_32-2003-12-29] at [hg r5534] [git :5535]
Exporting tag [clisp_2_33-2004-03-17] at [hg r6010] [git :6011]
Exporting tag [ffcall-1-9] at [hg r6011] [git :6012]
Exporting tag [clisp_2_33_1-2004-05-22] at [hg r6564] [git :6565]
Exporting tag [clisp_2_33_2-2004-06-02] at [hg r6633] [git :6634]
Exporting tag [ffcall-1-10] at [hg r6665] [git :6666]
Exporting tag [clisp_2_33_84-2005-07-07] at [hg r9539] [git :9540]
Exporting tag [clisp_2_34-2005-07-20] at [hg r9572] [git :9573]
Exporting tag [clisp_2_35-2005-08-29] at [hg r9736] [git :9737]
Exporting tag [clisp_2_36-2005-12-04] at [hg r10332] [git :10333]
Exporting tag [clisp_2_37-2006-01-02] at [hg r10470] [git :10471]
Exporting tag [clisp_2_38-2006-01-24] at [hg r10547] [git :10548]
Exporting tag [clisp_2_39-2006-07-16] at [hg r10867] [git :10868]
Exporting tag [clisp_2_40-2006-09-23] at [hg r10987] [git :10988]
Exporting tag [clisp_2_41-2006-10-13] at [hg r11030] [git :11031]
Exporting tag [clisp_2_42-2007-10-16] at [hg r11478] [git :11479]
Exporting tag [clisp_2_43-2007-11-18] at [hg r11744] [git :11745]
Exporting tag [clisp_2_44-2008-02-02] at [hg r12080] [git :12081]
Exporting tag [pre-threads-merge] at [hg r12104] [git :12105]
Exporting tag [clisp_2_45-2008-05-15] at [hg r12520] [git :12521]
Exporting tag [clisp_2_46-2008-07-02] at [hg r12843] [git :12844]
Exporting tag [clisp_2_47-2008-10-23] at [hg r13363] [git :13364]
Exporting tag [post-threads-merge] at [hg r13402] [git :13403]
Exporting tag [post-threads1-merge] at [hg r13479] [git :13480]
Exporting tag [clisp_2_48-2009-07-28] at [hg r14179] [git :14180]
Exporting tag [clisp_2_49-2010-07-07] at [hg r14974] [git :14975]
Exporting tag [clisp_2_49_50-2017-03-19] at [hg r15857] [git :15858]
Exporting tag [clisp_2_49_51-2017-04-17] at [hg r15891] [git :15892]
Exporting tag [clisp_2_49_60-2017-06-25] at [hg r15941] [git :15942]
Exporting tag [clisp_2_49_90-2018-02-11] at [hg r16633] [git :16634]
Exporting tag [clisp_2_49_92-2018-02-18] at [hg r16656] [git :16657]

Therefore rename the tags by hand:
git_tag_rename() {
  git tag "$2" "$1" && git tag -d "$1"
}
git_tag_rename "release-1999-01-08" "clisp-2.22-1999-01-08"
git_tag_rename "release-1999-07-22" "clisp-2.23-1999-07-22"
git_tag_rename "release-2000-03-06" "clisp-2.24-2000-03-06"
git_tag_rename "clisp_2_25-2001-03-15" "clisp-2.25-2001-03-15"
git_tag_rename "clisp_2_25_1-2001-04-06" "clisp-2.25.1-2001-04-06"
git_tag_rename "clisp_2_26-2001-05-23" "clisp-2.26-2001-05-23"
git_tag_rename "clisp_2_27-2001-07-17" "clisp-2.27-2001-07-17"
git_tag_rename "clisp_2_28-2002-03-03" "clisp-2.28-2002-03-03"
git_tag_rename "clisp_2_30-2002-09-15" "clisp-2.30-2002-09-15"
git_tag_rename "clisp_2_31-2003-09-01" "clisp-2.31-2003-09-01"
git_tag_rename "clisp_2_32-2003-12-29" "clisp-2.32-2003-12-29"
git_tag_rename "clisp_2_33-2004-03-17" "clisp-2.33-2004-03-17"
git_tag_rename "clisp_2_33_1-2004-05-22" "clisp-2.33.1-2004-05-22"
git_tag_rename "clisp_2_33_2-2004-06-02" "clisp-2.33.2-2004-06-02"
git_tag_rename "clisp_2_33_84-2005-07-07" "clisp-2.33.84-2005-07-07"
git_tag_rename "clisp_2_34-2005-07-20" "clisp-2.34-2005-07-20"
git_tag_rename "clisp_2_35-2005-08-29" "clisp-2.35-2005-08-29"
git_tag_rename "clisp_2_36-2005-12-04" "clisp-2.36-2005-12-04"
git_tag_rename "clisp_2_37-2006-01-02" "clisp-2.37-2006-01-02"
git_tag_rename "clisp_2_38-2006-01-24" "clisp-2.38-2006-01-24"
git_tag_rename "clisp_2_39-2006-07-16" "clisp-2.39-2006-07-16"
git_tag_rename "clisp_2_40-2006-09-23" "clisp-2.40-2006-09-23"
git_tag_rename "clisp_2_41-2006-10-13" "clisp-2.41-2006-10-13"
git_tag_rename "clisp_2_42-2007-10-16" "clisp-2.42-2007-10-16"
git_tag_rename "clisp_2_43-2007-11-18" "clisp-2.43-2007-11-18"
git_tag_rename "clisp_2_44-2008-02-02" "clisp-2.44-2008-02-02"
git_tag_rename "clisp_2_45-2008-05-15" "clisp-2.45-2008-05-15"
git_tag_rename "clisp_2_46-2008-07-02" "clisp-2.46-2008-07-02"
git_tag_rename "clisp_2_47-2008-10-23" "clisp-2.47-2008-10-23"
git_tag_rename "clisp_2_48-2009-07-28" "clisp-2.48-2009-07-28"
git_tag_rename "clisp_2_49-2010-07-07" "clisp-2.49-2010-07-07"
git_tag_rename "clisp_2_49_50-2017-03-19" "clisp-2.49.50-2017-03-19"
git_tag_rename "clisp_2_49_51-2017-04-17" "clisp-2.49.51-2017-04-17"
git_tag_rename "clisp_2_49_60-2017-06-25" "clisp-2.49.60-2017-06-25"
git_tag_rename "clisp_2_49_90-2018-02-11" "clisp-2.49.90-2018-02-11"
git_tag_rename "clisp_2_49_92-2018-02-18" "clisp-2.49.92-2018-02-18"
git_tag_rename "devel" "checkin-1998-07-22"
git_tag_rename "ffcall-1-10" "ffcall-1.10"
git_tag_rename "ffcall-1-8" "ffcall-1.8"
git_tag_rename "ffcall-1-9" "ffcall-1.9"
git_tag_rename "libcharset_1_0" "libcharset-1.0"
git_tag_rename "libcharset_1_1" "libcharset-1.1"
git_tag_rename "libiconv_1_6_1" "libiconv-1.6.1"
git_tag_rename "libiconv_1_7" "libiconv-1.7"

10) Delete obsolete tags:

$ git tag -d snap-1998-07-30 snap-1998-08-05 snap-1998-08-12 snap-1998-08-29

11) Place specific tags:

git checkout master

git checkout bfff60158a0fee74fe91e03b8f6ca8714889bdb4 ('2001-01-29 16:08:48')
git tag -f ffcall-1.8

git checkout b60ce6bed39109a2b37355288d47e31bbf2cd0d4 ('2001-04-06 19:12:37')
git tag clisp-2.25.1-2001-04-06-approx
git tag -d clisp-2.25.1-2001-04-06

git checkout 1d02292fa7604b5389c21a7eff30273ef3b9db03 ('2001-05-21 20:09:01')
git tag -f clisp-2.26-2001-05-23

git checkout 52a98271c6eeee89bafd69ea7d1cbef9b472ae5b ('2001-07-17 00:45:51')
git tag -f clisp-2.27-2001-07-17

git checkout 98544bbd05f3b41516cf9a8074a887e639de8ef3 ('2002-03-06 06:05:19')
git tag clisp-2.28-2002-03-03-approx
git tag -d clisp-2.28-2002-03-03

12) Unify unlabeled-* branches in a clisp-2.29 branch.

br=unlabeled-1.1367.2
br=unlabeled-1.1367.2.1.2
br=unlabeled-1.1367.2.1.2.3.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~8 # remove 3 cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-ChangeLog
git branch -D unlabeled-1.1367.2.1.2
git branch -D unlabeled-1.1367.2

br=unlabeled-1.10.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-spvw_genera1.d

br=unlabeled-1.16.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-describe.lisp

br=unlabeled-1.17.2
br=unlabeled-1.17.2.1.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~4 # remove 2 cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-clisp.spec
git branch -D unlabeled-1.17.2

br=unlabeled-1.174.2
br=unlabeled-1.174.2.1.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~4 # remove 2 cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-CHANGES.LOG
git branch -D unlabeled-1.174.2

br=unlabeled-1.177.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-spvw.d

br=unlabeled-1.18.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-ffcall-avcall+vacall-configure

br=unlabeled-1.20.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-ffcall-callback-vacall_r-configure

br=unlabeled-1.22.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-version.h

br=unlabeled-1.241.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-lispbibl.d

br=unlabeled-1.25.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-ffcall-aclocal.m4

br=unlabeled-1.259.2
br=unlabeled-1.259.2.1.2
br=unlabeled-1.259.2.1.2.1.4
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~6 # remove 3 cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-stream.d
git branch -D unlabeled-1.259.2.1.2
git branch -D unlabeled-1.259.2

br=unlabeled-1.33.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-spvw_memfile.d

br=unlabeled-1.54.2
br=unlabeled-1.54.2.1.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~4 # remove 2 cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-init.lisp
git branch -D unlabeled-1.54.2

br=unlabeled-1.55.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-encoding.d

br=unlabeled-1.70.2
br=unlabeled-1.70.2.2.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~5 # remove 2 cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-compiler.lisp
git branch -D unlabeled-1.70.2

br=unlabeled-1.71.2
git checkout ${br}
git reset --hard HEAD^
git rebase -i HEAD~2 # remove cvs2hg generated "fixup commit"
git branch -m ${br} clisp-2.29-aclocal.m4

git checkout clisp-2.29-2002-07-25
git reset --hard HEAD^
git rebase -i HEAD~11 # remove 4 cvs2hg generated "fixup commit" and 'regenerated'
                      # merge conflict in src/compiler.lisp
git merge 4aa15022fcb7bf0856a9e22b32a9591d1ee0d115 # = clisp-2.29-stream.d minus the last 2 commits
git merge clisp-2.29-compiler.lisp
          # merge conflict in src/compiler.lisp by choosing the 'progn' variant.
git merge clisp-2.29-CHANGES.LOG \
          clisp-2.29-ChangeLog \
          clisp-2.29-aclocal.m4 \
          clisp-2.29-ffcall-avcall+vacall-configure \
          clisp-2.29-ffcall-callback-vacall_r-configure \
          clisp-2.29-describe.lisp \
          clisp-2.29-encoding.d \
          clisp-2.29-ffcall-aclocal.m4 \
          clisp-2.29-init.lisp \
          clisp-2.29-lispbibl.d \
          clisp-2.29-spvw.d \
          clisp-2.29-spvw_genera1.d \
          clisp-2.29-spvw_memfile.d \
          clisp-2.29-version.h

# The result is not exactly clisp-2.29, because there are differences:
modules/clx/new-clx/clx.f: ADD 'NOTREACHED and thus NOTIMPLEMENTED and UNDEFINED require a semicolon' 2002-03-06
src/_clisp.html: MINUS last 1 commit
src/defs1.lisp: ADD some other (lost) patch
src/encoding.lisp: ADD some other (lost) patch
src/inspect.lisp: ADD some other (lost) patch
src/makemake.in: ADD some other (lost) patch
src/type.lisp: ADD some other (lost) patch
src/compiler.lisp: ADD some other (lost) patch

git tag clisp-2.29-2002-07-24-approx

git merge clisp-2.29-clisp.spec clisp-2.29-stream.d

git branch -m clisp-2.29-2002-07-25 clisp-2.29

git branch -d clisp-2.29-CHANGES.LOG
git branch -d clisp-2.29-ChangeLog
git branch -d clisp-2.29-aclocal.m4
git branch -d clisp-2.29-ffcall-avcall+vacall-configure
git branch -d clisp-2.29-ffcall-callback-vacall_r-configure
git branch -d clisp-2.29-clisp.spec
git branch -d clisp-2.29-compiler.lisp
git branch -d clisp-2.29-describe.lisp
git branch -d clisp-2.29-encoding.d
git branch -d clisp-2.29-ffcall-aclocal.m4
git branch -d clisp-2.29-init.lisp
git branch -d clisp-2.29-lispbibl.d
git branch -d clisp-2.29-spvw.d
git branch -d clisp-2.29-spvw_genera1.d
git branch -d clisp-2.29-spvw_memfile.d
git branch -d clisp-2.29-stream.d
git branch -d clisp-2.29-version.h

13) Now for real:
Prepare for 10 GB of swap.
git gc --prune=now --aggressive


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