bootstrap: add prompt to bootstrap with flakes setup

.github/workflows/fakedroid-odt.yml

@@ -3,7 +3,7 @@ on:
   pull_request:
   push:
 jobs:
-  fakedroid-odt:
+  fakedroid-odt-channel:
     runs-on: ubuntu-latest
 
     steps:
@@ -31,7 +31,7 @@ jobs:
             --impure \
             --out-link fakedroid
 
-      - name: Initialize fakedroid
+      - name: Initialize fakedroid for channel setup
         run: ./fakedroid echo INIT
 
       - name: Run tests
@@ -43,3 +43,37 @@ jobs:
       - name: Push to cachix
         if: always() && github.event_name != 'pull_request'
         run: ./fakedroid nix-shell -p cachix --run 'nix --extra-experimental-features nix-command path-info --all | cachix push nix-on-droid'
+
+
+  fakedroid-flakes:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Install nix
+        uses: cachix/install-nix-action@v18
+
+      - name: Setup cachix
+        uses: cachix/cachix-action@v12
+        with:
+          name: nix-on-droid
+          signingKey: "${{ secrets.CACHIX_SIGNING_KEY }}"
+
+      - name: Build fakedroid script
+        run: |
+          nix \
+            --log-format bar-with-logs \
+            --option keep-going true \
+            --show-trace \
+            build .#fakedroid \
+            --impure \
+            --out-link fakedroid
+
+      - name: Initialize fakedroid for flake setup
+        run: USE_FLAKE=1 ./fakedroid echo INIT
+
+      - name: Push to cachix
+        if: always() && github.event_name != 'pull_request'
+        run: ./fakedroid nix-shell -p cachix --run 'nix --extra-experimental-features nix-command path-info --all | cachix push nix-on-droid'

CHANGELOG.md

@@ -11,6 +11,8 @@
   device, but bootstrap zip ball creation and running tests via fakedroid
   requires flake setup)
 * Add support for `nix profile` managed profiles
+* Add possibilty to bootstrap Nix-on-Droid with flakes via prompt on initial
+  boot
 
 ## Release 22.05
 

modules/environment/login/login-inner.nix

@@ -4,6 +4,8 @@
 
 let
   inherit (initialPackageInfo) cacert nix;
+
+  nixCmd = "${nix}/bin/nix --extra-experimental-features flakes --extra-experimental-features nix-command";
 in
 
 writeText "login-inner" ''
@@ -32,37 +34,77 @@ writeText "login-inner" ''
 
       export NIX_SSL_CERT_FILE=${cacert}
 
-      echo "Installing and updating nix-channels..."
-      ${nix}/bin/nix-channel --add ${config.build.channel.nixpkgs} nixpkgs
-      ${nix}/bin/nix-channel --update nixpkgs
-      ${nix}/bin/nix-channel --add ${config.build.channel.nix-on-droid} nix-on-droid
-      ${nix}/bin/nix-channel --update nix-on-droid
+      echo
+      echo "Nix-on-Droid can be set up with channels or with flakes (still experimental)."
+      while [[ -z $USE_FLAKE ]]; do
+        read -r -p "Do you want to set it up with flakes? (y/N) " flakes
 
-      DEFAULT_CONFIG=$(${nix}/bin/nix-instantiate --eval --expr "<nix-on-droid/modules/environment/login/nix-on-droid.nix.default>")
+        if [[ "$flakes" =~ ^[Yy]$ ]]; then
+          USE_FLAKE=1
+        elif [[ "$flakes" =~ ^[Nn]$ ]]; then
+          USE_FLAKE=0
+        else
+          echo "Received invalid input, please try again. $flakes"
+        fi
+      done
 
-      echo "Installing first nix-on-droid generation..."
-      ${nix}/bin/nix --extra-experimental-features nix-command \
-        build --no-link --file "<nix-on-droid>" nix-on-droid
-      $(${nix}/bin/nix --extra-experimental-features nix-command \
-        path-info --file "<nix-on-droid>" nix-on-droid)/bin/nix-on-droid switch -f $DEFAULT_CONFIG
+      if [[ "$USE_FLAKE" == 0 ]]; then
 
-      . "${config.user.home}/.nix-profile/etc/profile.d/nix-on-droid-session-init.sh"
+        echo "Setting up Nix-on-Droid with channels..."
 
-      echo "Copying default nix-on-droid config..."
-      mkdir --parents $HOME/.config/nixpkgs
-      cp $DEFAULT_CONFIG $HOME/.config/nixpkgs/nix-on-droid.nix
-      chmod u+w $HOME/.config/nixpkgs/nix-on-droid.nix
+        echo "Installing and updating nix-channels..."
+        ${nix}/bin/nix-channel --add ${config.build.channel.nixpkgs} nixpkgs
+        ${nix}/bin/nix-channel --update nixpkgs
+        ${nix}/bin/nix-channel --add ${config.build.channel.nix-on-droid} nix-on-droid
+        ${nix}/bin/nix-channel --update nix-on-droid
+
+        DEFAULT_CONFIG=$(${nix}/bin/nix-instantiate --eval --expr "<nix-on-droid/modules/environment/login/nix-on-droid.nix.default>")
+
+        echo "Installing first nix-on-droid generation..."
+        ${nixCmd} build --no-link --file "<nix-on-droid>" nix-on-droid
+        $(${nixCmd} path-info --file "<nix-on-droid>" nix-on-droid)/bin/nix-on-droid switch --file $DEFAULT_CONFIG
+
+        . "${config.user.home}/.nix-profile/etc/profile.d/nix-on-droid-session-init.sh"
+
+        echo "Copying default nix-on-droid config..."
+        mkdir --parents $HOME/.config/nixpkgs
+        cp $DEFAULT_CONFIG $HOME/.config/nixpkgs/nix-on-droid.nix
+        chmod u+w $HOME/.config/nixpkgs/nix-on-droid.nix
+
+      else
+
+        echo "Setting up Nix-on-Droid with flakes..."
+
+        echo "Installing flake from default template..."
+        ${nixCmd} flake new ${config.user.home}/.config/nix-on-droid --template ${config.build.flake.nix-on-droid}
+
+        echo "Installing first nix-on-droid generation..."
+        ${nixCmd} run ${config.build.flake.nix-on-droid} -- switch --flake ${config.user.home}/.config/nix-on-droid#deviceName
+
+        . "${config.user.home}/.nix-profile/etc/profile.d/nix-on-droid-session-init.sh"
+
+      fi
 
       echo
       echo "Congratulations! Now you have Nix installed with some default packages like bashInteractive, \
     coreutils, cacert and, most importantly, nix-on-droid itself to manage local configuration, see"
       echo "  nix-on-droid help"
-      echo "or in the config file"
-      echo "  ~/.config/nixpkgs/nix-on-droid.nix"
-      echo
-      echo "You can go for the bare nix-on-droid setup or you can configure your phone via home-manager. See \
+
+      if [[ "$USE_FLAKE" == 0 ]]; then
+        echo "or the config file"
+        echo "  ~/.config/nixpkgs/nix-on-droid.nix"
+        echo
+        echo "You can go for the bare nix-on-droid setup or you can configure your phone via home-manager. See \
     config file for further information."
-      echo
+        echo
+      else
+        echo "or the flake"
+        echo "  ~/.config/nix-on-droid/"
+        echo
+        echo "You can go for the bare nix-on-droid setup or you can configure your phone via home-manager. See \
+    other templates in ${config.build.flake.nix-on-droid}."
+        echo
+      fi
     fi
   ''}
 

tests/fakedroid.sh

@@ -8,11 +8,17 @@
 
 set -ueo pipefail
 
+USE_FLAKE="${USE_FLAKE:-0}"
+if [[ ! "$USE_FLAKE" =~ ^[01]$ ]]; then
+    echo "USE_FLAKE environment variable needs to be either 0 or 1, got '$USE_FLAKE'."
+    exit 1
+fi
+
 # this allows to run this script from every place in this git repo
 REPO_DIR="$(git rev-parse --show-toplevel)"
 
 INJ_DIR="$REPO_DIR/.fakedroid/inj"
-ENV_DIR="$REPO_DIR/.fakedroid/env"
+ENV_DIR="$REPO_DIR/.fakedroid/env/$USE_FLAKE"
 
 QEMU_URL="https://github.com/multiarch/qemu-user-static/releases/download/v6.1.0-8/qemu-aarch64-static"
 QEMU="$INJ_DIR/qemu-aarch64"
@@ -33,6 +39,7 @@ PASSTHROUGH_VARS=(
     "TERM=$TERM"
     "HOME=$TARGET_HOME"
     "USER=$USER"
+    "USE_FLAKE=$USE_FLAKE"
 )
 
 [[ -n "${CACHIX_SIGNING_KEY:-}" ]] && \