Add vim-slime and vim-ipython-cell

Added interactive python repl commands with two plugins:
Sending repl snippets over with vim-slime and interacting with python
(notebook-like) snippets in the editor with vim-ipython-cell.

Cells are simply demarcated by `## ` at the beginning of a line, though
they can have other syntaxes as well, e.g. `# %% `.

By default slime sends its commands over to the last used tmux pane so
it is easy to set up a split coding/repl-ing session.

Interaction mappings all center around <leader>c + another key.
You can send a simple cell with `<leader>cc` or `<leader>C`,
single lines or selections with `<leader>cs`.

You can switch between cells with `]c` `[c` and insert new ones
below/above existing ones with `<leader>co` `<leader>cO` respectively.

nvim/.config/nvim/lua/maps.lua

@@ -71,16 +71,14 @@ map.n.nore[']a'] = ':next<cr>'
 map.n.nore['[b'] = ':bprevious<cr>'
 map.n.nore[']b'] = ':bnext<cr>'
 -- Quickfix list
-map.n.nore['[c'] = ':cprevious<cr>'
+map.n.nore['[q'] = ':cprevious<cr>'
-map.n.nore[']c'] = ':cnext<cr>'
+map.n.nore[']q'] = ':cnext<cr>'
 -- Location list
 map.n.nore['[l'] = ':lprevious<cr>'
 map.n.nore[']l'] = ':lnext<cr>'
 -- Hunks (from gitsigns)
-map.n.nore.expr['[h'] =
+map.n.nore.expr['[h'] = [[&diff ? ']c' : '<cmd>Gitsigns prev_hunk<CR>']]
-    [[&diff ? ']c' : '<cmd>lua require("gitsigns.actions").prev_hunk()<CR>']]
+map.n.nore.expr[']h'] = [[&diff ? '[c' : '<cmd>Gitsigns next_hunk<CR>']]
-map.n.nore.expr[']h'] =
-    [[&diff ? '[c' : '<cmd>lua require("gitsigns.actions").next_hunk()<CR>']]
 
 -- set our leader key to space since with hjkl, space is largely useless
 vim.g.mapleader = " "
@@ -257,3 +255,22 @@ map.n.nore['<leader>ww'] = [[:lua require 'zettelkasten'.open_index()<cr> ]]
 -- PLUGIN: toggleterm.nvim
 -- create a lazygit window, set up in toggleterm settings
 map.n.nore['<leader>G'] = ':Lazygit<cr>'
+
+-- PLUGIN: slime and ipython-cell
+-- send line / region, not adhering to cells
+map.n['<leader>cs'] = '<Plug>SlimeLineSend'
+map.x['<leader>cs'] = '<Plug>SlimeRegionSend'
+-- send complete script to repl / benchmark execution
+map.n.nore['<leader>cr'] = ':IPythonCellRun<cr>'
+map.n.nore['<leader>cR'] = ':IPythonCellRunTime<cr>'
+-- send current cell / send and go to next
+map.n.nore['<leader>cc'] = ':IPythonCellExecuteCellVerbose<cr>'
+map.n.nore['<leader>C'] = ':IPythonCellExecuteCellVerboseJump<cr>'
+-- clear ipython repl
+map.n.nore['<leader>cl'] = ':IPythonCellClear<cr>'
+-- jump to previous/ next cell
+map.n.nore[']c'] = ':IPythonCellNextCell<cr>'
+map.n.nore['[c'] = ':IPythonCellPrevCell<cr>'
+-- insert cell header above/below
+map.n.nore['<leader>cO'] = ':IPythonCellInsertAbove<cr>a'
+map.n.nore['<leader>co'] = ':IPythonCellInsertBelow<cr>a'

nvim/.config/nvim/lua/plugins.lua

@@ -36,7 +36,12 @@ require("packer").startup(function()
         'lewis6991/gitsigns.nvim', -- show vcs changes on left-hand gutter
         requires = {'nvim-lua/plenary.nvim'},
         tag = 'release',
-        config = function() require('gitsigns').setup() end,
+        config = function() require('gitsigns').setup{
+            keymaps = {
+                ['n ]c'] = nil,
+                ['n [c'] = nil,
+            }
+        } end,
         event = "BufRead"
     }
     use {
@@ -124,6 +129,25 @@ require("packer").startup(function()
     -- languages
     use {'euclidianAce/BetterLua.vim', ft = 'lua'} -- better syntax highlighting for lua
 
+    -- REPL work
+    use {
+        'jpalardy/vim-slime', -- send arbitrary code chunks to REPLs
+        ft = "python",
+        config = function()
+            vim.g.slime_target = 'tmux'
+            vim.g.slime_default_config = {socket_name = "default", target_pane = "{last}"}
+            vim.g.slime_python_ipython = 1
+            vim.g.slime_no_mappings = 1
+        end,
+    }
+    use { 'hanschen/vim-ipython-cell', -- send code 'cells' to REPL
+        ft = "python",
+        config = function()
+            vim.g.ipython_cell_highlight_cells_ft = {'python'}
+            vim.g.ipython_cell_insert_tag = "## Cell"
+        end,
+    }
+
     --
     -- nvim plugs
     use 'Iron-E/nvim-cartographer' -- makes it easier to set mappings through lua