Depending on your Delphi versions, you will likely miss Indy files:
The gap between XE and XE8 is not covered, but these versions miss a lot of files too.
The cause is that Embarcadero uses their own version control system, which is merged down and up to the Indy Subversion repository at irregular and incomplete intervals likely lacking a process checking if the merge results are OK.
Related:
You can get the missing files from GitHub – graemeg/indy.
This is the delta from Delphi 2010 to XE:
...\Indy10\Core\de\IdDsnCoreResourceStrings.pas
...\Indy10\Core\de\IdResourceStringsCore.pas
...\Indy10\Core\fr\IdDsnCoreResourceStrings.pas
...\Indy10\Core\fr\IdResourceStringsCore.pas
...\Indy10\Core\ja\IdDsnCoreResourceStrings.pas
...\Indy10\Core\ja\IdResourceStringsCore.pas
...\Indy10\Core\dclindycore.res
...\Indy10\Core\IdAboutVCL.rc
...\Indy10\Core\indycore.res
...\Indy10\Protocols\de\IdDsnResourceStrings.pas
...\Indy10\Protocols\de\IdHTTPWebBrokerBridge.pas
...\Indy10\Protocols\de\IdMessageBuilder.pas
...\Indy10\Protocols\de\IdResourceStringsProtocols.pas
...\Indy10\Protocols\de\IdZLibConst.pas
...\Indy10\Protocols\fr\IdDsnResourceStrings.pas
...\Indy10\Protocols\fr\IdHTTPWebBrokerBridge.pas
...\Indy10\Protocols\fr\IdMessageBuilder.pas
...\Indy10\Protocols\fr\IdResourceStringsProtocols.pas
...\Indy10\Protocols\fr\IdZLibConst.pas
...\Indy10\Protocols\ja\IdDsnResourceStrings.pas
...\Indy10\Protocols\ja\IdHTTPWebBrokerBridge.pas
...\Indy10\Protocols\ja\IdMessageBuilder.pas
...\Indy10\Protocols\ja\IdResourceStringsProtocols.pas
...\Indy10\Protocols\ja\IdZLibConst.pas
...\Indy10\Protocols\dclindyprotocols.res
...\Indy10\Protocols\IdAllAuthentications.pas
...\Indy10\Protocols\IdAllHeaderCoders.pas
...\Indy10\Protocols\IdAuthenticationSSPI.pas
...\Indy10\Protocols\IdBlockCipherIntercept.pas
...\Indy10\Protocols\IdCompressorZLib.pas
...\Indy10\Protocols\IdFIPS.pas
...\Indy10\Protocols\IdFTPListParseIEFTPGateway.pas
...\Indy10\Protocols\IdFTPListParsePCNFSD.pas
...\Indy10\Protocols\IdFTPListParsePCTCP.pas
...\Indy10\Protocols\IdFTPListParseSuperTCP.pas
...\Indy10\Protocols\IdFTPListParseTandemGuardian.pas
...\Indy10\Protocols\IdFTPListParseUnisysClearPath.pas
...\Indy10\Protocols\IdHashSHA.pas
...\Indy10\Protocols\IdHeaderCoder2022JP.pas
...\Indy10\Protocols\IdHeaderCoderBase.pas
...\Indy10\Protocols\IdHeaderCoderPlain.pas
...\Indy10\Protocols\IdHMAC.pas
...\Indy10\Protocols\IdHMACMD5.pas
...\Indy10\Protocols\IdHMACSHA1.pas
...\Indy10\Protocols\IdHTTPWebBrokerBridge.pas
...\Indy10\Protocols\IdMessageBuilder.pas
...\Indy10\Protocols\IdSASL_CRAM_SHA1.pas
...\Indy10\Protocols\IdSASL_CRAMBase.pas
...\Indy10\Protocols\IdSASLDigest.pas
...\Indy10\Protocols\IdSSLOpenSSLUtils.pas
...\Indy10\Protocols\IdSSPI.pas
...\Indy10\Protocols\IdUriUtils.pas
...\Indy10\Protocols\IdWebDAV.pas
...\Indy10\Protocols\IdZLib.pas
...\Indy10\Protocols\IdZLibConst.pas
...\Indy10\Protocols\IdZLibHeaders.pas
...\Indy10\Protocols\indyprotocols.res
...\Indy10\System\de\IdResourceStrings.pas
...\Indy10\System\fr\IdResourceStrings.pas
...\Indy10\System\ja\IdResourceStrings.pas
This is the delta from XE to XE2 (i.e. missing as of Delphi XE2) the same sources added to XE have been gone on XE2:
...\Indy10\Core\de\IdDsnCoreResourceStrings.pas
...\Indy10\Core\de\IdResourceStringsCore.pas
...\Indy10\Core\fr\IdDsnCoreResourceStrings.pas
...\Indy10\Core\fr\IdResourceStringsCore.pas
...\Indy10\Core\ja\IdDsnCoreResourceStrings.pas
...\Indy10\Core\ja\IdResourceStringsCore.pas
...\Indy10\Core\dclIndyCore.dpk
...\Indy10\Core\dclindycore.res
...\Indy10\Core\IdAboutVCL.pas
...\Indy10\Core\IdAboutVCL.rc
...\Indy10\Core\IdAntiFreeze.pas
...\Indy10\Core\IdCoreDsnRegister.pas
...\Indy10\Core\IdCoreRegisterCool.dcr
...\Indy10\Core\IdCoreSelectionEditors.pas
...\Indy10\Core\IdDsnCoreResourceStrings.pas
...\Indy10\Core\IdDsnPropEdBindingVCL.pas
...\Indy10\Core\IdRegisterCore.pas
...\Indy10\Protocols\de\IdDsnResourceStrings.pas
...\Indy10\Protocols\de\IdHTTPWebBrokerBridge.pas
...\Indy10\Protocols\de\IdMessageBuilder.pas
...\Indy10\Protocols\de\IdResourceStringsProtocols.pas
...\Indy10\Protocols\de\IdZLibConst.pas
...\Indy10\Protocols\fr\IdDsnResourceStrings.pas
...\Indy10\Protocols\fr\IdHTTPWebBrokerBridge.pas
...\Indy10\Protocols\fr\IdMessageBuilder.pas
...\Indy10\Protocols\fr\IdResourceStringsProtocols.pas
...\Indy10\Protocols\fr\IdZLibConst.pas
...\Indy10\Protocols\ja\IdDsnResourceStrings.pas
...\Indy10\Protocols\ja\IdHTTPWebBrokerBridge.pas
...\Indy10\Protocols\ja\IdMessageBuilder.pas
...\Indy10\Protocols\ja\IdResourceStringsProtocols.pas
...\Indy10\Protocols\ja\IdZLibConst.pas
...\Indy10\Protocols\dclIndyProtocols.dpk
...\Indy10\Protocols\dclindyprotocols.res
...\Indy10\Protocols\IdDsnRegister.pas
...\Indy10\Protocols\IdDsnResourceStrings.pas
...\Indy10\Protocols\IdDsnSASLListEditorFormVCL.pas
...\Indy10\Protocols\IdRegister.pas
...\Indy10\Protocols\IdRegisterCool.dcr
...\Indy10\System\de\IdResourceStrings.pas
...\Indy10\System\fr\IdResourceStrings.pas
...\Indy10\System\ja\IdResourceStrings.pas
In fact more are missing, the Delphi 2007 to 2009 delta was this:
...\Indy10\Core
...\Indy10\Core\dclIndyCore.dpk
...\Indy10\Core\dclindycore.dpkw
...\Indy10\Core\dclIndyCore.drc
...\Indy10\Core\dclindycore.res
...\Indy10\Core\IdAbout.pas
...\Indy10\Core\IdAboutDotNET.pas
...\Indy10\Core\IdAboutVCL.pas
...\Indy10\Core\IdAntiFreeze.pas
...\Indy10\Core\IdCoreDsnRegister.pas
...\Indy10\Core\IdCoreRegister.dcr
...\Indy10\Core\IdDsnBaseCmpEdt.pas
...\Indy10\Core\IdDsnCoreResourceStrings.pas
...\Indy10\Core\IdDsnPropEdBinding.pas
...\Indy10\Core\IdDsnPropEdBindingNET.pas
...\Indy10\Core\IdDsnPropEdBindingVCL.pas
...\Indy10\Core\IdRegisterCore.pas
...\Indy10\Core\indycore.dpkw
...\Indy10\Core\IndyCore.drc
...\Indy10\Protocols
...\Indy10\Protocols\dclIndyProtocols.dpk
...\Indy10\Protocols\dclindyprotocols.dpkw
...\Indy10\Protocols\dclIndyProtocols.drc
...\Indy10\Protocols\dclindyprotocols.res
...\Indy10\Protocols\IdCompressorZLibEx.pas
...\Indy10\Protocols\IdDsnRegister.pas
...\Indy10\Protocols\IdDsnResourceStrings.pas
...\Indy10\Protocols\IdDsnSASLListEditor.pas
...\Indy10\Protocols\IdDsnSASLListEditorForm.pas
...\Indy10\Protocols\IdDsnSASLListEditorFormVCL.pas
...\Indy10\Protocols\IdHashSHA1.pas
...\Indy10\Protocols\IdHL7.pas
...\Indy10\Protocols\IdMIMETypes.pas
...\Indy10\Protocols\IdRegister.dcr
...\Indy10\Protocols\IdRegister.pas
...\Indy10\Protocols\IdRegisterCool.dcr
...\Indy10\Protocols\IdSSLOpenSSLHeadersNET.pas
...\Indy10\Protocols\IdZLibEx.pas
...\Indy10\Protocols\indyprotocols.dpkw
...\Indy10\Protocols\IndyProtocols.drc
...\Indy10\System
...\Indy10\System\IdObjs.pas
...\Indy10\System\IdObjsBase.pas
...\Indy10\System\IdObjsVCL.pas
...\Indy10\System\IdStackLinux.pas
...\Indy10\System\IdSys.pas
...\Indy10\System\IdSysBase.pas
...\Indy10\System\IdSysNativeVCL.pas
...\Indy10\System\IdSysNet.pas
...\Indy10\System\IdSysVCL.pas
...\Indy10\System\IdSysVCLNet.pas
...\Indy10\System\IdSysWin32.pas
...\Indy10\System\IndySystem.drc
RS … mentiones the files missing as of Berlin, but in fact many other delphi versions miss files too.
File only in Indy SVN: 'Core\IdAbout.pas'
File only in Indy SVN: 'Core\IdAboutDotNET.pas'
File only in Indy SVN: 'Core\IdAboutVCL.pas'
File only in Indy SVN: 'Core\IdAntiFreeze.pas'
File only in Indy SVN: 'Core\IdCoreDsnRegister.pas'
File only in Indy SVN: 'Core\IdDsnBaseCmpEdt.pas'
File only in Indy SVN: 'Core\IdDsnCoreResourceStrings.pas'
File only in Indy SVN: 'Core\IdDsnPropEdBinding.pas'
File only in Indy SVN: 'Core\IdDsnPropEdBindingNET.pas'
File only in Indy SVN: 'Core\IdDsnPropEdBindingVCL.pas'
File only in Indy SVN: 'Core\IdRegisterCore.pas'
File only in Indy SVN: 'Core\indycorefpc.pas'
File only in Indy SVN: 'Design\IdDsnCoreResourceStrings.pas'
File only in Indy SVN: 'Design\IdDsnNETCompEditor.pas'
File only in Indy SVN: 'Design\IdDsnPropEdBindingNET.pas'
File only in Indy SVN: 'Protocols\IdASN1Coder.pas'
File only in Indy SVN: 'Protocols\IdCoderTNEF.pas'
File only in Indy SVN: 'Protocols\IdDsnRegister.pas'
File only in Indy SVN: 'Protocols\IdDsnResourceStrings.pas'
File only in Indy SVN: 'Protocols\IdDsnSASLListEditor.pas'
File only in Indy SVN: 'Protocols\IdDsnSASLListEditorForm.pas'
File only in Indy SVN: 'Protocols\IdDsnSASLListEditorFormNET.pas'
File only in Indy SVN: 'Protocols\IdDsnSASLListEditorFormVCL.pas'
File only in Indy SVN: 'Protocols\IdDummyUnit.pas'
File only in Indy SVN: 'Protocols\IdHashAdler32.pas'
File only in Indy SVN: 'Protocols\IdHashIntf.pas'
File only in Indy SVN: 'Protocols\IdHashSHA1.pas'
File only in Indy SVN: 'Protocols\IdHeaderCoderBig5.pas'
File only in Indy SVN: 'Protocols\IdHL7.pas'
File only in Indy SVN: 'Protocols\IdHostnameServer.pas'
File only in Indy SVN: 'Protocols\IdLDAPV3.pas'
File only in Indy SVN: 'Protocols\IdLDAPV3Coder.pas'
File only in Indy SVN: 'Protocols\IdMIMETypes.pas'
File only in Indy SVN: 'Protocols\IdNTLMv2.pas'
File only in Indy SVN: 'Protocols\IdPOP4Server.pas'
File only in Indy SVN: 'Protocols\IdRegister.pas'
File only in Indy SVN: 'Protocols\IdResourceStringsSSLDotNet.pas'
File only in Indy SVN: 'Protocols\IdSASL_NTLM.pas'
File only in Indy SVN: 'Protocols\IdServerIOHandlerSSLOpenSSL.pas'
File only in Indy SVN: 'Protocols\IdSSH.pas'
File only in Indy SVN: 'Protocols\IdSSLDotNET.pas'
File only in Indy SVN: 'Protocols\IdTunnelCommon.pas'
File only in Indy SVN: 'Protocols\IdTunnelMaster.pas'
File only in Indy SVN: 'Protocols\IdTunnelSlave.pas'
File only in Indy SVN: 'Protocols\IdUserAccountsOTP.pas'
File only in Indy SVN: 'Protocols\indyprotocolsfpc.pas'
File only in Indy SVN: 'Protocols\ZLib\ZLib.pas'
File only in Indy SVN: 'Protocols\ZLib\ZLibConst.pas'
File only in Indy SVN: 'System\IdAssemblyInfo.pas'
File only in Indy SVN: 'System\IdIconv.pas'
File only in Indy SVN: 'System\IdResourceStringsDotNet11.pas'
File only in Indy SVN: 'System\IdResourceStringsIconv.pas'
File only in Indy SVN: 'System\IdResourceStringsKylixCompat.pas'
File only in Indy SVN: 'System\IdResourceStringsTextEncoding.pas'
File only in Indy SVN: 'System\IdStackDotNet.pas'
File only in Indy SVN: 'System\IdStackLibc.pas'
File only in Indy SVN: 'System\IdStackLinux.pas'
File only in Indy SVN: 'System\IdStackUnix.pas'
File only in Indy SVN: 'System\IdStreamNET.pas'
File only in Indy SVN: 'System\IdTransactedFileStream.pas'
File only in Indy SVN: 'System\indysystemfpc.pas'aa
–jeroen