From d214605b3239f81a7585fc4979f134530d0ad050 Mon Sep 17 00:00:00 2001
From: Erik Arvstedt <erik.arvstedt@gmail.com>
Date: Tue, 16 Mar 2021 12:45:21 +0100
Subject: [PATCH] spark-wallet: add flakes compatibility

Pure flakes can't use NIX_PATH.
---
 pkgs/spark-wallet/composition.nix | 2 +-
 pkgs/spark-wallet/generate.sh     | 7 +++++++
 pkgs/spark-wallet/node-env.nix    | 1 -
 3 files changed, 8 insertions(+), 2 deletions(-)
 delete mode 100644 pkgs/spark-wallet/node-env.nix

diff --git a/pkgs/spark-wallet/composition.nix b/pkgs/spark-wallet/composition.nix
index dd99c0a..3bc2c21 100644
--- a/pkgs/spark-wallet/composition.nix
+++ b/pkgs/spark-wallet/composition.nix
@@ -5,7 +5,7 @@
   }, system ? builtins.currentSystem, nodejs ? pkgs."nodejs-10_x"}:
 
 let
-  nodeEnv = import ./node-env.nix {
+  nodeEnv = import "${toString pkgs.path}/pkgs/development/node-packages/node-env.nix" {
     inherit (pkgs) stdenv python2 utillinux runCommand writeTextFile;
     inherit nodejs;
     libtool = if pkgs.stdenv.isDarwin then pkgs.darwin.cctools else null;
diff --git a/pkgs/spark-wallet/generate.sh b/pkgs/spark-wallet/generate.sh
index 84434d9..b1bb841 100755
--- a/pkgs/spark-wallet/generate.sh
+++ b/pkgs/spark-wallet/generate.sh
@@ -22,6 +22,13 @@ jq '.dependencies["qrcode-terminal"] = .optionalDependencies["qrcode-terminal"]'
 cp pkg.json $TMPDIR/pkg.json
 node2nix --nodejs-10 -i $TMPDIR/pkg.json -c composition.nix --no-copy-node-env
 
+# Set node env import.
+# The reason for not providing a custom node-env.nix file is the following:
+# To be flakes-compatible, we have to locate the nixpgs source via `pkgs.path` instead of `<nixpkgs>`.
+# This requires the `pkgs` variable which is available only in composition.nix, not in node-env.nix.
+nodeEnvImport='import "${toString pkgs.path}/pkgs/development/node-packages/node-env.nix"'
+sed -i "s|import ./node-env.nix|$nodeEnvImport|" composition.nix
+
 # Use verified source in node-packages.nix
 url="https://github.com/shesek/spark-wallet/releases/download/v$version/spark-wallet-$version-npm.tgz"
 sed -i '/packageName = "spark-wallet";/!b;n;n;c\    src = fetchurl {\n      url = "'$url'";\n      sha256 = "'$shasum'";\n    };' node-packages.nix
diff --git a/pkgs/spark-wallet/node-env.nix b/pkgs/spark-wallet/node-env.nix
deleted file mode 100644
index f17b2d6..0000000
--- a/pkgs/spark-wallet/node-env.nix
+++ /dev/null
@@ -1 +0,0 @@
-import <nixpkgs/pkgs/development/node-packages/node-env.nix>