From 0f1919c187d9148b1b8e073358af92e649008ab9 Mon Sep 17 00:00:00 2001
From: lkcl <lkcl@web>
Date: Tue, 5 Apr 2022 01:31:17 +0100
Subject: [PATCH]

---
 HDL_workflow/nextpnr-xilinx.mdwn | 41 --------------------------------
 1 file changed, 41 deletions(-)

diff --git a/HDL_workflow/nextpnr-xilinx.mdwn b/HDL_workflow/nextpnr-xilinx.mdwn
index 690cebf8f..12897d71f 100644
--- a/HDL_workflow/nextpnr-xilinx.mdwn
+++ b/HDL_workflow/nextpnr-xilinx.mdwn
@@ -23,27 +23,6 @@ auto-preparation script here:
     mount -t devpts devpts $MY_CHROOT/dev/pts/
     chroot $MY_CHROOT /bin/bash
 
-## Add Buster Backports Repo and Update
-
-""buster backports is needed for cmake""
-
-    cat << EOF > /etc/apt/sources.list.d/buster_backports.list
-    deb http://deb.debian.org/debian buster-backports main
-    EOF
-
-""oooo annoying, pin preferences for buster-backports""
-
-    cat << EOF > /etc/apt/preferences.d/99buster-backports
-    Package: *
-    Pin: release a=buster-backports
-    Pin-Priority: 900
-    EOF
-
-""upgrade to buster-backports""
-
-    apt-get update -y
-    apt-get upgrade -y
-
 ## Download neccessary softwares
 
     apt-get install -y libcurl3-gnutls/buster git/buster
@@ -54,26 +33,6 @@ auto-preparation script here:
     git clone https://github.com/SymbiFlow/prjxray-db.git
     git clone https://github.com/gatecat/nextpnr-xilinx.git
 
-## Steps to compile Yosys
-
-### Necessary software to install
-
-    apt-get install -y build-essential make g++ cmake bison flex python3 \
-    clang libreadline-dev gawk tcl-dev libffi-dev pkg-config zlib1g-dev \
-    libboost-system-dev libboost-python-dev libboost-filesystem-dev
-
-### Build Yosys
-
-    cd abc
-    git checkout 00b674d5b3ccefc7f2abcbf5b650fc14298ac549
-    cd ../yosys
-    git checkout 6318db6152d053244adb316fda6e01a32a4f3c72
-    ln -s ../abc .
-    make -j $(nproc) PREFIX=/usr/local/nx
-    make PREFIX=/usr/local/nx install
-    export PATH=/usr/local/nx/bin:$PATH
-    cd ..
-
 ## Steps to compile prjxray
 
 ### Necessary software to install
-- 
2.30.2