Switch CI builder image from debian to nix

.circleci/config.yml

@@ -10,16 +10,11 @@ commands:
       subcommand:
         type: string
     steps:
-      - run:
-          name: Install dependencies
-          command: |
-            ln -fs /usr/share/zoneinfo/America/New_York /etc/localtime
-            apt update
-            apt install -y build-essential zlib1g-dev uuid-dev libdigest-sha-perl libelf-dev bc bzip2 bison flex git gnupg gawk iasl m4 nasm patch python python2 python3 wget gnat cpio ccache pkg-config cmake libusb-1.0-0-dev autoconf texinfo ncurses-dev doxygen graphviz udev libudev1 libudev-dev automake libtool rsync innoextract sudo libssl-dev device-tree-compiler u-boot-tools
       - run:
           name: Make Board
           command: |
-            rm -rf build/<<parameters.arch>>/<<parameters.target>>/* build/<<parameters.arch>>/log/* && make V=1 BOARD=<<parameters.target>> <<parameters.subcommand>> || touch ./tmpDir/failed_build
+            rm -rf build/<<parameters.arch>>/<<parameters.target>>/* build/<<parameters.arch>>/log/* &&
+            nix-shell --pure 'make V=1 BOARD=<<parameters.target>> <<parameters.subcommand>>' || touch ./tmpDir/failed_build
           no_output_timeout: 3h
       - run:
           name: Output hashes
@@ -86,6 +81,7 @@ jobs:
             #If precedent cache not found. Restore cache for musl-cross-make module digest (rarely modified).
             #Otherwise, we build cleanly.
             - heads-musl-cross-{{ checksum "./tmpDir/musl-cross.sha256sums" }}{{ .Environment.CACHE_VERSION }}
+
       - run:
           name: Download and neuter xx20 ME (keep generated GBE and extracted IFD in tree)
           command: |
@@ -141,7 +137,7 @@ jobs:
 
   build:
     docker:
-      - image: debian:11
+      - image: nixos/nix:2.12.0
     resource_class: large
     parameters:
       arch:
@@ -161,7 +157,7 @@ jobs:
 
   save_cache:
     docker:
-      - image: debian:11
+      - image: nixos/nix:2.12.0
     resource_class: large
     steps:
       - attach_workspace: