I should be working by now.

README.md

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+# Ledger
+
+## Development
+
+### Building locally
+
+```shell
+nix build
+```
+
+### Building dev environment
+
+#### For ide
+
+```shell
+nix build .#development-environment
+```
+
+#### For shell
+
+```shell
+nix develop
+```
+