diff --git a/.gitignore b/.gitignore
index 64d7460a..e4718437 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,3 +44,5 @@ xap/st/patches/st-vertcenter*
 /ap/hledger-bin/*.md.*
 /xap/x49gp/newrplfw.bin
 /d/crystal/completion.zsh
+/wayland/sway/patches/*.previous
+/d/crystal-lang-bin/completion.zsh
diff --git a/ap/jj/SlackBuild b/ap/jj/SlackBuild
new file mode 100755
index 00000000..9e647c84
--- /dev/null
+++ b/ap/jj/SlackBuild
@@ -0,0 +1,91 @@
+#!/bin/bash
+
+# variables
+GITHUB_REPO=martinvonz/jj
+VERSION=${VERSION:-latest}
+BUILD=${BUILD:-1}
+
+TAG=gwh
+TMP=/tmp/$TAG
+CWD=$(pwd)
+
+PRGNAM=$(basename $CWD)
+PKG=$TMP/pkg-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+ARCH=${ARCH:-$(uname -m)}
+
+REPOSITORY=${REPOSITORY:-/home/installs/SlackBuilds/_repositories/$PRGNAM}
+PREFIX=${PREFIX:-/usr}
+
+# nettoyage préalable
+rm -fr $PKG $TMP/$PRGNAM
+
+mkdir -p $PKG
+
+# mise en place
+cd $TMP
+[ ! -e $REPOSITORY ] && git clone https://github.com/${GITHUB_REPO}.git $REPOSITORY
+cd $REPOSITORY
+git pull --all
+
+cp -R $REPOSITORY $TMP/
+cd $TMP/$PRGNAM
+[ "x$VERSION" == "xlatest" ] && VERSION=$(git describe --tags --abbrev=0)
+[ "x$VERSION" == "x" ] && VERSION=trunk
+[ "x$VERSION" == "xtrunk" ] && VERSION="git_r$(git rev-list --count HEAD)_$(git log -1 --format=%h)" || git checkout $VERSION
+
+cargo build --release
+
+mkdir -p $PKG$PREFIX/bin
+find target/release/ -type f -executable -maxdepth 1 -exec cp {} $PKG$PREFIX/bin/ \;
+chmod 755 $PKG$PREFIX/bin/*
+
+# Completions
+mkdir -p $PKG/usr/share/bash-completion/completions/
+$PKG$PREFIX/bin/jj util completion > $PKG/usr/share/bash-completion/completions/jj
+
+mkdir -p $PKG/usr/share/fish/vendor_completions.d/
+$PKG$PREFIX/bin/jj util completion --fish > $PKG/usr/share/fish/vendor_completions.d/jj.fish
+
+mkdir -p $PKG/usr/share/zsh/site-functions/
+$PKG$PREFIX/bin/jj util completion --zsh > $PKG/usr/share/zsh/site-functions/_jj
+
+# move doc/ to the appropriate location
+mkdir -p $PKG$PREFIX/doc/$PRGNAM
+cp -a AUTHORS LICENSE* ./*.md docs/ $PKG$PREFIX/doc/$PRGNAM
+
+# correction
+cd $PKG
+chown -R root:root *
+
+[ -d $PKG$PREFIX/man ] && find $PKG$PREFIX/man -type f -not -name \*.gz -exec gzip -9 {} \;
+
+# embaumement
+mkdir -p $PKG/install
+
+cat <<EOF > $PKG/install/slack-desc
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.  Line
+# up the first '|' above the ':' following the base package name, and the '|'
+# on the right side marks the last column you can put a character in.  You must
+# make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':'.
+
+       |-----handy-ruler------------------------------------------------------|
+$PRGNAM: $PRGNAM (A Git-compatible DVCS that is both simple and powerful)
+$PRGNAM:
+$PRGNAM: Jujutsu is a Git-compatible DVCS. It combines features from Git (data
+$PRGNAM: model, speed), Mercurial (anonymous branching, simple CLI free from
+$PRGNAM: "the index", revsets, powerful history-rewriting), and Pijul/Darcs
+$PRGNAM: (first-class conflicts), with features not found in most of them
+$PRGNAM: (working-copy-as-a-commit, undo functionality, automatic rebase,
+$PRGNAM: safe replication via rsync, Dropbox, or distributed file system).
+$PRGNAM:
+$PRGNAM:
+$PRGNAM: https://github.com/${GITHUB_REPO}
+EOF
+
+# empaquetage
+rm -f $PKG/{,usr/}lib$(uname -m | grep -o 64)/*.la
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.txz