Create a nerpanet build option

Makefile

@@ -66,6 +66,9 @@ debug: lotus lotus-miner lotus-worker lotus-seed
 calibnet: GOFLAGS+=-tags=calibnet
 calibnet: lotus lotus-miner lotus-worker lotus-seed
 
+nerpanet: GOFLAGS+=-tags=nerpanet
+nerpanet: lotus lotus-miner lotus-worker lotus-seed
+
 lotus: $(BUILD_DEPS)
 	rm -f lotus
 	go build $(GOFLAGS) -o lotus ./cmd/lotus

build/bootstrap/nerpanet.pi

@@ -0,0 +1,4 @@
+/dns4/bootstrap-0.nerpa.interplanetary.dev/tcp/1347/p2p/12D3KooWNfuGjtzWTVz8eJGZ2C3aJg2xLqorhsagu4LTWw6CwpK9
+/dns4/bootstrap-1.nerpa.interplanetary.dev/tcp/1347/p2p/12D3KooWDfsxYk7dC6NNsHqZqqyMJCzkjZuXhjsmqBk3TUCBZLga
+/dns4/bootstrap-2.nerpa.interplanetary.dev/tcp/1347/p2p/12D3KooWRZAGHmCCaa2gkYmnC4Q2TEwHGFSh6Fh1FFJ7RSXak5yN
+/dns4/bootstrap-3.nerpa.interplanetary.dev/tcp/1347/p2p/12D3KooWBFxEigSKLvxJVdw3JziC9ePHHnyAn5LifWSqg2kttcth

build/params_calibnet.go

@@ -28,9 +28,6 @@ var UpgradeActorsV2Height = abi.ChainEpoch(30)
 
 const UpgradeTapeHeight = 60
 
-// This signals our tentative epoch for mainnet launch. Can make it later, but not earlier.
-// Miners, clients, developers, custodians all need time to prepare.
-// We still have upgrades and state changes to do, but can happen after signaling timing here.
 const UpgradeLiftoffHeight = -5
 
 const UpgradeKumquatHeight = 90

build/params_mainnet.go

@@ -2,6 +2,7 @@
 // +build !2k
 // +build !testground
 // +build !calibnet
+// +build !nerpanet
 
 package build
 

build/params_nerpanet.go

@@ -0,0 +1,74 @@
+// +build nerpanet
+
+package build
+
+import (
+	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/lotus/chain/actors/policy"
+
+	builtin2 "github.com/filecoin-project/specs-actors/v2/actors/builtin"
+)
+
+var DrandSchedule = map[abi.ChainEpoch]DrandEnum{
+	0: DrandMainnet,
+}
+
+const BootstrappersFile = "nerpanet.pi"
+const GenesisFile = "nerpanet.car"
+
+const UpgradeBreezeHeight = -1
+const BreezeGasTampingDuration = 0
+
+const UpgradeSmokeHeight = -1
+
+const UpgradeIgnitionHeight = -2
+const UpgradeRefuelHeight = -3
+
+const UpgradeTapeHeight = -4
+
+const UpgradeLiftoffHeight = -5
+const UpgradeActorsV2Height = 120 // critical: the network can bootstrap from v1 only
+
+const UpgradeKumquatHeight = -6
+
+const UpgradeCalicoHeight = 999999999
+const UpgradePersianHeight = UpgradeCalicoHeight + (builtin2.EpochsInHour * 60)
+
+const UpgradeOrangeHeight = 9999999999
+
+// 2020-12-22T02:00:00Z
+const UpgradeClausHeight = 99999999999
+
+// TODO
+const UpgradeActorsV3Height = 999999999999
+
+func init() {
+	// Minimum block production power is set to 4 TiB
+	// Rationale is to discourage small-scale miners from trying to take over the network
+	// One needs to invest in ~2.3x the compute to break consensus, making it not worth it
+	//
+	// DOWNSIDE: the fake-seals need to be kept alive/protected, otherwise network will seize
+	//
+	policy.SetConsensusMinerMinPower(abi.NewStoragePower(4 << 40))
+
+	policy.SetSupportedProofTypes(
+		abi.RegisteredSealProof_StackedDrg512MiBV1,
+		abi.RegisteredSealProof_StackedDrg32GiBV1,
+		abi.RegisteredSealProof_StackedDrg64GiBV1,
+	)
+
+	// Lower the most time-consuming parts of PoRep
+	policy.SetPreCommitChallengeDelay(10)
+
+	// TODO - make this a variable
+	//miner.WPoStChallengeLookback = abi.ChainEpoch(2)
+
+	Devnet = false
+}
+
+const BlockDelaySecs = uint64(builtin2.EpochDurationSeconds)
+
+const PropagationDelaySecs = uint64(6)
+
+// BootstrapPeerThreshold is the minimum number peers we need to track for a sync worker to start
+const BootstrapPeerThreshold = 4