BBC News OnlineCampaigners have vowed to break the law by opening a cannabis cafe in Scotland when the drug is reclassified.
Scottish Socialist Party (SSP) drugs spokesman Kevin Williamson said the executive's stance had left the law looking "mangled".
He said: "It's one of these laws that's dishonest and hypocritical and like every dishonest and hypocritical law it has to be challenged."
He added: "We want to build a network of cannabis tolerant zones across Scotland beginning with the Purple Haze Café and expanding it across the whole of Scotland with the objective of calling on the Scottish Executive, the police forces and the local authorities to create Scottish-wide cannabis tolerant zones until our parliament has the powers to change the law."