fix: lower bundle storage cost to 0.02 IST / Kb like mainnet

Minting IST can't be skipped altogether; we still need _some_.
But we can mint just 100 and only 1 time, rather than 4k several
times.

contract/Makefile

@@ -21,6 +21,21 @@ SIGN_BROADCAST_OPTS=--keyring-backend=test --chain-id=$(CHAINID) \
 		--gas=auto --gas-adjustment=$(GAS_ADJUSTMENT) \
 		--yes -b block
 
+mint100:
+	make FUNDS=1000$(ATOM) fund-acct
+	cd /usr/src/agoric-sdk && \
+		yarn --silent agops vaults open --wantMinted 100 --giveCollateral 100 >/tmp/want-ist.json && \
+		yarn --silent agops perf satisfaction --executeOffer /tmp/want-ist.json --from user1 --keyring-backend=test
+
+# https://agoric.explorers.guru/proposal/61
+lower-bundle-cost: scripts/lower-bundle-cost.json ./scripts/voteLatestProposalAndWait.sh
+	agd tx gov submit-proposal param-change scripts/lower-bundle-cost.json \
+	$(SIGN_BROADCAST_OPTS) \
+	--from user1
+	./scripts/voteLatestProposalAndWait.sh
+	# agd query swingset params
+
+# Keep mint4k around a while for compatibility
 mint4k:
 	make FUNDS=1000$(ATOM) fund-acct
 	cd /usr/src/agoric-sdk && \

contract/scripts/install-bundles.sh

@@ -16,10 +16,6 @@ install_bundle() {
 # exit fail if bundle-list is emtpy
 [ -s bundles/bundle-list ] || exit 1
 
-# TODO: avoid needing so much IST
-# https://github.com/agoric-labs/dapp-game-places/issues/3
-make mint4k
-make mint4k
 make balance-q  # do we have enough IST?
 
 for b in $(cat bundles/bundle-list); do 

contract/scripts/lower-bundle-cost.json

@@ -0,0 +1,49 @@
+{
+    "title": "Lower Bundle Cost to 0.02 IST/Kb (a la mainnet 61)",
+    "description": "0.02 IST/Kb",
+    "deposit": "10000000ubld",
+    "changes": [
+        {
+            "subspace": "swingset",
+            "key": "beans_per_unit",
+            "value": [
+                {
+                    "key": "blockComputeLimit",
+                    "beans": "6500000000"
+                },
+                {
+                    "key": "feeUnit",
+                    "beans": "1000000000000"
+                },
+                {
+                    "key": "inboundTx",
+                    "beans": "10000000000"
+                },
+                {
+                    "key": "message",
+                    "beans": "1000000000"
+                },
+                {
+                    "key": "messageByte",
+                    "beans": "20000000"
+                },
+                {
+                    "key": "minFeeDebit",
+                    "beans": "200000000000"
+                },
+                {
+                    "key": "vatCreation",
+                    "beans": "30000000"
+                },
+                {
+                    "key": "xsnapComputron",
+                    "beans": "100"
+                },
+                {
+                    "key": "storageByte",
+                    "beans": "20000000"
+                }
+            ]
+        }
+    ]
+}

contract/scripts/run-chain.sh

@@ -63,7 +63,8 @@ waitForBlock 2
 # Approve any proposals forever in the background.
 approveProposals &
 
-make -C /workspace/contract mint4k
+make -C /workspace/contract mint100
+make -C /workspace/contract lower-bundle-cost
 
 # bring back chain process to foreground
 wait

contract/scripts/voteLatestProposalAndWait.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+set -ueo pipefail
+
+. /usr/src/upgrade-test-scripts/env_setup.sh
+voteLatestProposalAndWait