From 7793b7d8af601353e236252922abe84c5e9b79d0 Mon Sep 17 00:00:00 2001
From: Alejandro Soto <alejandro@34project.org>
Date: Sat, 19 Mar 2022 16:56:48 -0600
Subject: home: improve shenv infra

---
 flake.nix        | 13 ++++---------
 home/zshrc.nix   |  8 +++++---
 nixpkgs.nix      |  3 ---
 pkgs/default.nix | 13 +++++++++----
 4 files changed, 18 insertions(+), 19 deletions(-)
 delete mode 100644 nixpkgs.nix

diff --git a/flake.nix b/flake.nix
index bbac6ec..0f29de3 100644
--- a/flake.nix
+++ b/flake.nix
@@ -11,27 +11,22 @@
     nur.url = "github:nix-community/NUR";
   };
 
-  outputs = { self, nixpkgs, home-manager, nur, ... }: let
-    pkgs = import nixpkgs {
-      system = "x86_64-linux";
-      config = import ./nixpkgs.nix;
-    };
-  in with pkgs.lib; let
+  outputs = { self, nixpkgs, home-manager, nur, ... }: with nixpkgs.lib; let
     util = import ./util;
-    inherit (util pkgs.lib) importAll;
+    inherit (util nixpkgs.lib) importAll;
 
     pkgSet = pkgs: import ./pkgs {
       inherit pkgs;
       util = util pkgs.lib;
     };
   in {
-    packages."x86_64-linux" = pkgSet pkgs;
+    packages."x86_64-linux" = pkgSet nixpkgs.legacyPackages."x86_64-linux";
 
     overlay = self: super: {
       local = pkgSet super;
     };
 
-    nixosConfigurations = with pkgs.lib; let
+    nixosConfigurations = let
       hostConfig = host: (makeOverridable nixosSystem) {
         system = "x86_64-linux";
         modules = [ (import ./sys self) host ];
diff --git a/home/zshrc.nix b/home/zshrc.nix
index 39b34ff..85cdc95 100644
--- a/home/zshrc.nix
+++ b/home/zshrc.nix
@@ -43,8 +43,10 @@
 
   INSTALLABLES=()
   while read -d: PATH_ITEM; do
-    if [[ "$PATH_ITEM" =~ "^/nix/store/[a-z0-9]+-([a-zA-Z][a-zA-Z0-9_]*(-[a-zA-Z][a-zA-Z0-9_]*)*)" ]]; then
-      INSTALLABLES+=("''${match[1]}")
+    if [[ "$PATH_ITEM" =~ "^(/nix/store/[a-z0-9]+-([a-zA-Z][a-zA-Z0-9_]*(-[a-zA-Z][a-zA-Z0-9_]*)*)(-[^/]+)?)/" ]]; then
+      ENTER="''${match[1]}/lib/shenv/enter"
+      [[ "''${match[2]}" =~ '^shenv-' && -r "$ENTER" ]] && . "$ENTER"
+      INSTALLABLES+=("''${match[2]}")
     fi
   done <<<"$PATH"
 
@@ -52,7 +54,7 @@
     _GRML_NIX_SHELL="{''${INSTALLABLES[@]}} "
   fi
 
-  unset INSTALLABLES PATH_ITEM
+  unset INSTALLABLES ENTER PATH_ITEM 
 
   function grml_nix_shell() {
     REPLY="$_GRML_NIX_SHELL"
diff --git a/nixpkgs.nix b/nixpkgs.nix
deleted file mode 100644
index 8d78534..0000000
--- a/nixpkgs.nix
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  android_sdk.accept_license = true;
-}
diff --git a/pkgs/default.nix b/pkgs/default.nix
index 35cf2bf..5ee0a63 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -1,9 +1,14 @@
-{ pkgs, util }: let
-  inherit (pkgs) callPackage;
+{ pkgs, util }:
+with pkgs.lib; let
+  inherit (pkgs) buildEnv callPackage writeTextDir;
 in {
   shenvs = let
-    env = name: env: pkgs.buildEnv (env pkgs // { name = "shenv-${name}"; });
-  in pkgs.lib.mapAttrs env (util.importAll {
+    build = name: { paths, enter ? null }: buildEnv {
+      name = "shenv-${name}";
+      paths = (optional (enter != null) (writeTextDir "lib/shenv/enter" enter))
+            ++ paths;
+    };
+  in pkgs.lib.mapAttrs (name: shenv: build name (shenv pkgs)) (util.importAll {
     root = ../shenvs;
     exclude = [ "config" ];
   });
-- 
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