Migration guides

# To skip IDL upload
anchor deploy --no-idl

# Old
anchor verify <PROGRAM_ID>

# New (uses solana-verify)
anchor verify <PROGRAM_ID>  # Works the same, but uses solana-verify under the hood

// Before: required specific program type
pub system_program: Program<'info, System>

// After: can use generic for any program
pub any_program: Program<'info>

// Use discriminator methods instead of hardcoding
let discriminator = MyAccount::discriminator();

// Before
#[account(mut)]
pub large_account: Account<'info, LargeData>

// After (for better performance)
#[account(mut)]
pub large_account: LazyAccount<'info, LargeData>

// Before
use anchor_spl::token::{TokenAccount, Token};

#[account(mut)]
pub token_account: Account<'info, TokenAccount>
pub token_program: Program<'info, Token>

// After
use anchor_spl::token_interface::{TokenAccount, TokenInterface};

#[account(mut)]
pub token_account: InterfaceAccount<'info, TokenAccount>
pub token_program: Interface<'info, TokenInterface>

[toolchain]
solana_version = "1.18.0"

// Automatic account resolution from IDL
await program.methods
  .myInstruction()
  .accounts({
    // Only required accounts need to be specified
    user: user.publicKey,
  })
  .rpc();