feat(nvim): setup for ipynb dev work

Setup:
- molten (run python code)
- otter (lsp in markdown codeblocks)
- jupytext (convert .ipynb files to .md files transparently)
- image (display images inside neovim (e.g. matplotlib graphs))

flake.lock

@@ -260,11 +260,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1727672256,
-        "narHash": "sha256-9/79hjQc9+xyH+QxeMcRsA6hDyw6Z9Eo1/oxjvwirLk=",
+        "lastModified": 1728067476,
+        "narHash": "sha256-/uJcVXuBt+VFCPQIX+4YnYrHaubJSx4HoNsJVNRgANM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1719f27dd95fd4206afb9cec9f415b539978827e",
+        "rev": "6e6b3dd395c3b1eb9be9f2d096383a8d05add030",
         "type": "github"
       },
       "original": {
@@ -292,11 +292,11 @@
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
-        "lastModified": 1727645871,
-        "narHash": "sha256-Os3PAThU5XliKkKa+SHsFyV/EsCHogHcYONmpzb6500=",
+        "lastModified": 1728145679,
+        "narHash": "sha256-qd1nr2b+WUiyzJva650LBX/3hDBru0ZSVxKHSm1BE0w=",
         "owner": "nix-community",
         "repo": "nixvim",
-        "rev": "5f4a4b47597d3b9ac26c41ff4e8da28fa662f200",
+        "rev": "6594472fd275f6dcf5a9fba4a83d2f7fa2cf2b8a",
         "type": "github"
       },
       "original": {
@@ -373,11 +373,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1727431250,
-        "narHash": "sha256-uGRlRT47ecicF9iLD1G3g43jn2e+b5KaMptb59LHnvM=",
+        "lastModified": 1727984844,
+        "narHash": "sha256-xpRqITAoD8rHlXQafYZOLvUXCF6cnZkPfoq67ThN0Hc=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "879b29ae9a0378904fbbefe0dadaed43c8905754",
+        "rev": "4446c7a6fc0775df028c5a3f6727945ba8400e64",
         "type": "github"
       },
       "original": {
@@ -388,11 +388,11 @@
     },
     "unstable": {
       "locked": {
-        "lastModified": 1727634051,
-        "narHash": "sha256-S5kVU7U82LfpEukbn/ihcyNt2+EvG7Z5unsKW9H/yFA=",
+        "lastModified": 1728018373,
+        "narHash": "sha256-NOiTvBbRLIOe5F6RbHaAh6++BNjsb149fGZd1T4+KBg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "06cf0e1da4208d3766d898b7fdab6513366d45b9",
+        "rev": "bc947f541ae55e999ffdb4013441347d83b00feb",
         "type": "github"
       },
       "original": {

nvim/plugins.nix

@@ -160,6 +160,15 @@ in
       };
     };
     gitsigns.enable = true;
+    image.enable = true;
+    jupytext = {
+      enable = true;
+      settings.custom_language_formatting.python = {
+        extension = "md";
+        style = "markdown";
+        force_ft = "markdown";
+      };
+    };
     lint = {
       enable = true;
       lintersByFt = {
@@ -214,6 +223,15 @@ in
       enable = true;
       settings.update_events = "TextChanged,TextChangedI";
     };
+    molten = {
+      enable = true;
+      settings = {
+        image_provider = "image.nvim";
+        virt_text_output = true;
+        molten_auto_open_output = false;
+        molten_virt_lines_off_by_1 = true;
+      };
+    };
     noice = {
       enable = true;
       lsp.override = {
@@ -245,6 +263,7 @@ in
         mode = "virtualtext";
       };
     };
+    otter.enable = true;
     rustaceanvim = {
       enable = true;
       # Install through rustup
@@ -260,6 +279,7 @@ in
     treesitter = {
       enable = true;
       settings = {
+        highlight.enable = true;
         indent.enable = true;
         incremental_election.enable = true;
       };

nvim/standalone.nix

@@ -62,6 +62,7 @@
       pkgs.unstable.typos
       pkgs.unstable.yamlfmt
     ];
+    extraPython3Packages = p: [ p.jupytext ];
     extraConfigLuaPre =
       # lua
       ''