Just heard this! Discovered via the new compilation from Because Music called Cosmic Machine: A Voyage Across French Cosmic & Electronic Avantgarde (1970-1980) .
According to both Resident Advisor and the label, the compilation "collects artefacts from the French electronic music scene throughout the 1970s, chronicling an era 'when the synthesizer was man's best friend and when the future had a future'."
Nice. Really nice.
This one from Space Art (great name for a 70's cosmic group!) is a winner. You can currently stream the whole compilation via RA in a very modern 'try before you buy' style situation. And you can buy the vinyl here.