Remove proot from nix-portable

The pkgsStatic.proot is broken due to failed
dependencies. In upstream nix-portable they have
a custom derivation on top o proot gitlab. But
since we don't need it, we can remove it safely.

Reviewed-by: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>

pkgs/nix-portable/default.nix

@@ -25,7 +25,6 @@ with builtins;
   nixStatic,
   busyboxStatic ? pkgs.pkgsStatic.busybox,
   bwrapStatic ? pkgs.pkgsStatic.bubblewrap,
-  prootStatic ? pkgs.pkgsStatic.proot,
   zstdStatic ? pkgs.pkgsStatic.zstd,
 
   perlBuildBuild ? pkgs.pkgsBuildBuild.perl,
@@ -105,7 +104,6 @@ let
 
   bwrap = packStaticBin "${bwrapStatic}/bin/bwrap";
   nixStatic = packStaticBin "${inp.nixStatic}/bin/nix";
-  proot = packStaticBin "${prootStatic}/bin/proot";
   zstd = packStaticBin "${zstdStatic}/bin/zstd";
 
   # the default nix store contents to extract when first used
@@ -113,7 +111,7 @@ let
 
 
   # The runtime script which unpacks the necessary files to $HOME/.nix-portable
-  # and then executes nix via proot or bwrap
+  # and then executes nix via bwrap
   # Some shell expressions will be evaluated at build time and some at run time.
   # Variables/expressions escaped via `\$` will be evaluated at run time
   runtimeScript = ''
@@ -128,17 +126,6 @@ let
       trap "declare -p > \''${TMPDIR:-/tmp}/np_env" EXIT
     fi
 
-    # there seem to be less issues with proot when disabling seccomp
-    # though on android it is needed
-    if [ -n "\$TERMUX_VERSION" ]; then
-      unset LD_PRELOAD
-      NP_RUNTIME=\''${NP_RUNTIME:-proot}
-      export PROOT_TMP_DIR="\$TMPDIR/proot"
-      mkdir -p "\$PROOT_TMP_DIR"
-    else
-      export PROOT_NO_SECCOMP=\''${PROOT_NO_SECCOMP:-1}
-    fi
-
     set -e
     if [ -n "\$NP_DEBUG" ] && [ "\$NP_DEBUG" -ge 2 ]; then
       set -x
@@ -255,7 +242,6 @@ let
 
       # install other binaries
       ${installBin zstd "zstd"}
-      ${installBin proot "proot"}
       ${installBin bwrap "bwrap"}
       ${installBin nixStatic "nix"}
 
@@ -391,9 +377,6 @@ let
     debug "bwrap executable: \$NP_BWRAP"
     [ -z "\$NP_NIX" ] && NP_NIX=\$dir/bin/nix
     debug "nix executable: \$NP_NIX"
-    [ -z "\$NP_PROOT" ] && NP_PROOT=\$(PATH="\$PATH_OLD:\$PATH" which proot 2>/dev/null) || true
-    [ -z "\$NP_PROOT" ] && NP_PROOT=\$dir/bin/proot
-    debug "proot executable: \$NP_PROOT"
     debug "testing all available runtimes..."
     if [ -z "\$NP_RUNTIME" ]; then
       # read last automatic selected runtime from disk
@@ -451,14 +434,8 @@ let
         # --bind \$dir/busybox/bin/busybox /bin/sh\\
     else
       # proot
-      collectBinds
-      makeBindArgs -b ":" \$toBind \$sslBind
-      run="\$NP_PROOT \$PROOT_ARGS\\
-        -r \$dir/emptyroot\\
-        -b /dev:/dev\\
-        -b \$dir/nix:/nix\\
-        \$binds"
-        # -b \$dir/busybox/bin/busybox:/bin/sh\\
+      echo Unsupported runtime: $NP_RUNTIME
+      exit 1
     fi
     debug "base command will be: \$run"
 
@@ -645,7 +622,6 @@ let
     zip="${zip}/bin/zip -0"
     $zip $out/bin/nix-portable.zip ${bwrap}/bin/bwrap
     $zip $out/bin/nix-portable.zip ${nixStatic}/bin/nix
-    $zip $out/bin/nix-portable.zip ${proot}/bin/proot
     $zip $out/bin/nix-portable.zip ${zstd}/bin/zstd
     $zip $out/bin/nix-portable.zip ${storeTar}/tar
     $zip $out/bin/nix-portable.zip ${caBundleZstd}
@@ -669,6 +645,6 @@ let
 in
 nixPortable.overrideAttrs (prev: {
   passthru = (prev.passthru or {}) // {
-    inherit bwrap proot;
+    inherit bwrap;
   };
 })