populate: reference all packages using "pkgs"

This fixes pop.pass's dependency on the caller's PATH for finding
the pass executable, while at the same time keeping its argument
consistent with the naming in other pop.$x functions.

pkgs/populate/default.nix

@@ -1,7 +1,7 @@
 with import ../../lib;
 with shell;
 
-{ coreutils, dash, findutils, git, jq, openssh, rsync, writeDash }:
+{ coreutils, findutils, git, openssh, pass, rsync, writeDash }@pkgs:
 
 let
   check = { force, target }: let
@@ -53,27 +53,27 @@ let
   in /* sh */ ''
     umask 0077
 
-    tmp_dir=$(${coreutils}/bin/mktemp -dt populate-pass.XXXXXXXX)
+    tmp_dir=$(${pkgs.coreutils}/bin/mktemp -dt populate-pass.XXXXXXXX)
     trap cleanup EXIT
     cleanup() {
       rm -fR "$tmp_dir"
     }
 
-    ${findutils}/bin/find ${quote passPrefix} -type f |
+    ${pkgs.findutils}/bin/find ${quote passPrefix} -type f |
     while read -r gpg_path; do
 
       rel_name=''${gpg_path#${quote passPrefix}}
       rel_name=''${rel_name%.gpg}
 
       pass_date=$(
-        ${git}/bin/git -C ${quote pass.dir} log -1 --format=%aI "$gpg_path"
+        ${pkgs.git}/bin/git -C ${quote pass.dir} log -1 --format=%aI "$gpg_path"
       )
       pass_name=${quote pass.name}/$rel_name
       tmp_path=$tmp_dir/$rel_name
 
-      ${coreutils}/bin/mkdir -p "$(${coreutils}/bin/dirname "$tmp_path")"
-      PASSWORD_STORE_DIR=${quote pass.dir} pass show "$pass_name" > "$tmp_path"
-      ${coreutils}/bin/touch -d "$pass_date" "$tmp_path"
+      ${pkgs.coreutils}/bin/mkdir -p "$(${pkgs.coreutils}/bin/dirname "$tmp_path")"
+      PASSWORD_STORE_DIR=${quote pass.dir} ${pkgs.pass}/bin/pass show "$pass_name" > "$tmp_path"
+      ${pkgs.coreutils}/bin/touch -d "$pass_date" "$tmp_path"
     done
 
     ${rsync' target /* sh */ "$tmp_dir"}
@@ -93,7 +93,7 @@ let
   populate = target: name: source: let
     source' = source.${source.type};
     target' = target // { path = "${target.path}/${name}"; };
-  in writeDash "populate.${target'.host}.${name}" ''
+  in pkgs.writeDash "populate.${target'.host}.${name}" ''
     set -efu
     ${pop.${source.type} target' source'}
   '';
@@ -103,7 +103,7 @@ let
     if test -d "$source_path"; then
       source_path=$source_path/
     fi
-    ${rsync}/bin/rsync \
+    ${pkgs.rsync}/bin/rsync \
         -e ${quote (ssh' target)} \
         -vFrlptD \
         --delete-excluded \
@@ -124,7 +124,7 @@ let
       '';
 
   ssh' = target: concatMapStringsSep " " quote [
-    "${openssh}/bin/ssh"
+    "${pkgs.openssh}/bin/ssh"
     "-l" target.user
     "-o" "ControlPersist=no"
     "-p" target.port
@@ -133,7 +133,7 @@ let
 
 in
 
-{ force ? false, source, target }: writeDash "populate.${target.host}" ''
+{ force ? false, source, target }: pkgs.writeDash "populate.${target.host}" ''
   set -efu
   ${check { inherit force target; }}
   set -x