2 options
open the .csv with a text editor (you will get all the separators like comas and so) select all > Copy (Ctrl+C), open GIMP if not yet opened, select the text tool, click on the canvas and past (Ctrl+V)
or open your csv with LibreOffice Calc, select what you need, Copy (Ctrl+C), go to GIMP, select the text tool, click on the canvas to activate the text tool on the canvas, then just paste (Ctrl+V), this later method is nice as it will keep the text formatted as column alike.
open the .csv with a text editor (you will get all the separators like comas and so) select all > Copy (Ctrl+C), open GIMP if not yet opened, select the text tool, click on the canvas and past (Ctrl+V)
or open your csv with LibreOffice Calc, select what you need, Copy (Ctrl+C), go to GIMP, select the text tool, click on the canvas to activate the text tool on the canvas, then just paste (Ctrl+V), this later method is nice as it will keep the text formatted as column alike.