From 63e70a9c85391efe7bd4669680d08265316c55f9 Mon Sep 17 00:00:00 2001
From: Cody Hiar <cody@hiar.ca>
Date: Fri, 21 May 2021 15:21:50 -0600
Subject: initial commit

---
 .gitignore       |  3 +++
 README.md        | 12 ++++++++++++
 flake.lock       | 42 ++++++++++++++++++++++++++++++++++++++++++
 flake.nix        | 42 ++++++++++++++++++++++++++++++++++++++++++
 main.py          |  3 +++
 requirements.txt |  1 +
 6 files changed, 103 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 README.md
 create mode 100644 flake.lock
 create mode 100644 flake.nix
 create mode 100644 main.py
 create mode 100644 requirements.txt

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e1bd8ab
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+.venv
+.direnv
+.envrc
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e01dfe6
--- /dev/null
+++ b/README.md
@@ -0,0 +1,12 @@
+# Python with Nix Flakes
+
+This repo is just to show how to use flakes with a simple python project. To try
+it out you can clone the repo and run:
+
+```
+nix develop
+python main.py
+```
+
+`nix develop` will drop you into a bash shell that will have everything you need
+to run `main.py`.
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..014a0c3
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,42 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1620759905,
+        "narHash": "sha256-WiyWawrgmyN0EdmiHyG2V+fqReiVi8bM9cRdMaKQOFg=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b543720b25df6ffdfcf9227afafc5b8c1fabfae8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1621630984,
+        "narHash": "sha256-lCzF8vKaUGzlQFx0RARbO7tRPUx01Spr/1fCkzV/i5s=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "12a9bd6fb8a6883480d5fc7ea4518c621060875e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..3c153d3
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,42 @@
+{
+  description = "A very basic flake for developing in python";
+  # Provides abstraction to boiler-code when specifying multi-platform outputs.
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs.url = "github:nixos/nixpkgs";
+  };
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+      venvDir = "./.venv";
+      pythonPackages = pkgs.python38Packages;
+    in {
+      devShell = pkgs.mkShell {
+        nativeBuildInputs = with pkgs; [
+          hello
+          pythonPackages.python
+        ];
+        shellHook = ''
+          SOURCE_DATE_EPOCH=$(date +%s)
+
+          if [ -d "${venvDir}" ]; then
+            echo "Skipping venv creation, '${venvDir}' already exists"
+          else
+            echo "Creating new venv environment in path: '${venvDir}'"
+            # Note that the module venv was only introduced in python 3, so for 2.7
+            # this needs to be replaced with a call to virtualenv
+            ${pythonPackages.python.interpreter} -m venv "${venvDir}"
+          fi
+
+          # Under some circumstances it might be necessary to add your virtual
+          # environment to PYTHONPATH, which you can do here too;
+          # PYTHONPATH=$PWD/${venvDir}/${pythonPackages.python.sitePackages}/:$PYTHONPATH
+
+          source "${venvDir}/bin/activate"
+
+          # As in the previous example, this is optional.
+          pip install -r requirements.txt
+        '';
+      };
+    });
+}
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..97b869a
--- /dev/null
+++ b/main.py
@@ -0,0 +1,3 @@
+import requests
+
+print(requests.get("https://www.codyhiar.com").text)
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..f229360
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+requests
-- 
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