Move /etc/{passwd,group} to basic-environment

default.nix

@@ -22,6 +22,8 @@ in
       nixpkgs.coreutils
       nixpkgs.nix
       # pkgs.proot
+      pkgs.files.etc-group
+      pkgs.files.etc-passwd
       pkgs.files.hm-install
       pkgs.files.home-nix-default
       pkgs.files.login

src/pkgs/files/default.nix

@@ -5,6 +5,9 @@
 
 let
   instDir = "/data/data/com.termux.nix/files/usr";
+  userName = "nix-on-droid";
+  groupName = "nix-on-droid";
+  shell = "/bin/sh";
 
   packageInfo = import "${nixDirectory}/nix-support/package-info.nix";
 
@@ -16,11 +19,16 @@ let
   };
 
   callPackage = buildPkgs.lib.callPackageWith (buildPkgs // {
-    inherit initialBuild instDir packageInfo writeTextDir;
+    inherit groupName initialBuild instDir packageInfo shell writeTextDir userName;
   });
 in
 
 {
+
+  etc-group = callPackage ./etc-group.nix { };
+
+  etc-passwd = callPackage ./etc-passwd.nix { };
+
   hm-install = callPackage ./hm-install.nix { };
 
   home-nix-default = writeTextDir "etc/home.nix.default" (builtins.readFile ./raw/home.nix.default);

src/pkgs/files/etc-group.nix

@@ -0,0 +1,20 @@
+# Licensed under GNU Lesser General Public License v3 or later, see COPYING.
+# Copyright (c) 2019 Alexander Sosedkin and other contributors, see AUTHORS.
+
+{ coreutils, runCommand, writeTextDir, instDir, userName, groupName }:
+
+let
+  ids = runCommand "ids" {} ''
+    mkdir $out
+    echo -n $(${coreutils}/bin/id -u) > $out/uid
+    echo -n $(${coreutils}/bin/id -g) > $out/gid
+  '';
+  gid = builtins.readFile "${ids}/gid";
+
+in
+
+writeTextDir "etc/group" ''
+  root:x:0:
+  ${groupName}:x:${gid}:${userName}
+''
+

src/pkgs/files/etc-passwd.nix

@@ -0,0 +1,19 @@
+# Licensed under GNU Lesser General Public License v3 or later, see COPYING.
+# Copyright (c) 2019 Alexander Sosedkin and other contributors, see AUTHORS.
+
+{ coreutils, runCommand, writeTextDir, instDir, userName, shell }:
+
+let
+  ids = runCommand "ids" {} ''
+    mkdir $out
+    echo -n $(${coreutils}/bin/id -u) > $out/uid
+    echo -n $(${coreutils}/bin/id -g) > $out/gid
+  '';
+  uid = builtins.readFile "${ids}/uid";
+  gid = builtins.readFile "${ids}/gid";
+in
+
+writeTextDir "etc/passwd" ''
+  root:x:0:0:System administrator:${instDir}/root:/bin/sh
+  ${userName}:x:${uid}:${gid}:/data/data/com.termux.nix/files/home:${shell}
+''

src/pkgs/files/login-inner.nix

@@ -33,21 +33,6 @@ writeTextDir "usr/lib/login-inner" ''
       echo "Setting up dynamic symlinks via nix-on-droid-linker"
       nix-on-droid-linker
 
-      [ "$#" -gt 0 ] || echo "Sourcing Nix environment..."
-      . $HOME/.nix-profile/etc/profile.d/nix.sh
-
-      if [ ! -e ${instDir}/etc/passwd ]; then
-        [ -n "$@" ] || echo "Creating /etc/passwd..."
-        echo "root:x:0:0:System administrator:${instDir}/root:/bin/sh" > ${instDir}/etc/passwd
-        echo "$USER:x:$(id -u):$USER:/data/data/com.termux.nix/files/home:/bin/sh" >> ${instDir}/etc/passwd
-      fi
-
-      if [ ! -e ${instDir}/etc/group ]; then
-        [ -n "$@" ] || echo "Creating /etc/group..."
-        echo "root:x:0:" > ${instDir}/etc/group
-        echo "$USER:x:$(id -g):$USER" >> ${instDir}/etc/group
-      fi
-
       echo
       echo "Congratulations! Now you have Nix installed with some basic packages like"
       echo "bashInteractive, coreutils, cacert and some scripts provided by nix-on-droid"
@@ -56,13 +41,12 @@ writeTextDir "usr/lib/login-inner" ''
       echo "You can go for the bare Nix setup or you can configure your phone via"
       echo "home-manager. For that simply run hm-install."
       echo
-    ''
-    else ''
-      [ "$#" -gt 0 ] || echo "Sourcing Nix environment..."
-      . $HOME/.nix-profile/etc/profile.d/nix.sh
-    ''
+    '' else ""
   }
 
+  [ "$#" -gt 0 ] || echo "Sourcing Nix environment..."
+  . $HOME/.nix-profile/etc/profile.d/nix.sh
+
   if [ -e "$HOME/.nix-profile/etc/profile.d/hm-session-vars.sh" ]; then
     [ "$#" -gt 0 ] || echo "Sourcing home-manager environment..."
     export NIX_PATH=$HOME/.nix-defexpr/channels''${NIX_PATH:+:}$NIX_PATH

src/pkgs/files/nix-on-droid-linker.nix

@@ -20,7 +20,7 @@ writeScriptBin "nix-on-droid-linker" ''
     link bin/$i bin/$i
   done
 
-  for i in home.nix.default nix/nix.conf resolv.conf; do
+  for i in group home.nix.default nix/nix.conf passwd resolv.conf; do
     link etc/$i etc/$i
   done