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OSS開発者の憂鬱
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Yusuke Wada
November 14, 2025
Programming
37k
19
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OSS開発者の憂鬱
2025-11-15 / YAPC::Fukuoka 2025
Yusuke Wada
November 14, 2025
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Transcript
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ࣗݾհ
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#PLFUFDPGPVOEFS w $SFBUPSPG)POP w IUUQTHJUIVCDPNZVTVLFCF The Melancholy of an OSS Developer
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9ͷΞΧϯτ ϑΥϩϫʔ IUUQTYDPNIPOPKT
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ԽϓϩμΫτ🔥
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ݟͨ͜ͱͷ ͳ͍ܠ৭
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ίϛοτ ༦৯ޙͷ࣌ؒ
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ͲΜͲΜ େ͖͘ͳͬͯ͘
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Βͳ͍ͱ͜ΖͰ͍ͭ ͷؒʹ͔ΘΕ͍ͯΔ
7FSDFMͷ#VOରԠͷϒϩάهࣄ #VOSVOUJNFPO7FSDFM'VODUJPOT IUUQTWFSDFMDPNCMPHCVOSVOUJNFPOWFSDFMGVODUJPOT
9ͷϙετͨ͘͞Μ IUUQTYDPNTFBSDI RIPOPKT
͜͜·Ͱ͘Δͱ Τΰα ͖͠Εͳ͍
͚ࣗͩͷͷ͕ ΈΜͳͷͷʹͳΔ
ϓϩμΫτ͕ ཱ͍ͬͯ͘
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ΫϦΤΠλʔ͔ Βϝϯςφʔ ͘͠ϝϯςφʔͱ͍͏ׂ͕͞ΕΔ
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อक w *TTVFΛ͘͞ w όά͔Ͳ͏͔ͷஅAUSJBHFAϥϕϧΛACVHA͔AOPUCVHAʹྨ͢Δ w όάΛमਖ਼͢Δ w ৽ػೳͷݕ౼Λ͢Δ͏͢Ͱʹ͋Δػೳ͔ʁ͍ΕΔ͖ػೳ͔ʁ w
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ۙ$MPTFͨ͠AGFBUAͷ13ݸͷ͔ͭ͠࡞ͬͯͳ͍
IUUQTPTTJOTJHIUJPBOBMZ[FIPOPKTIPOPSFQPTJUPSZ *TTVFͷίϝϯτҰ൪ଟ͍
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(JU)VCͷ*OCPY͕ڪාʂ
ʮ*TTVFϨϏϡʔ͕ଟ͍ͷͲ ͜ʹͰ͋ΔΜ͡Όʁʁʯ ʮ044ͳΒͰͷۤ࿑ʯ͕͋Γ·͢ ͦΕؚΊͯʜ
044։ൃͷ ۤ࿑Λͭհ
৭Μͳਓ͕͍Δ
ྸ ࠃ ਓछ ݴ༿ ࣌ࠩ ಘҙͳݴޠϥϯλΠϜ త
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ͦͷ݁Ռʜ*TTVF13͕Βͭ͘ w ӳޠͷϨϕϧςΠετ w ࣄʁझຯʁ w ஸೡ͔ɾࡶ͔ w ࣌ؒ w
ڥ w ͬͯΔϥϯλΠϜ $MPVE fl BSF%FOP#VO/PEFKTʜ w ϓϥοτϑΥʔϜ w 04
͞ΒʹͲΜͳਓ͕ དྷΔ͔͔Βͳ͍
Γସ͕͑େม *TTVF" *TTVF# *TTVF$ هड़͕ஸೡ ӳޠ͕͔Γ͍͢ هड़͕ࡶ ӳޠ͕͔Γʹ͍͘ ʮ࣍ͲΜͳ*TTVF͔ͳʁʯ ߏ͑ͳ͍͚ͯ͘ͳ͍
Կ͕͘Δ͔Θ͔Βͳ͍
ྫ$MPVEGMBSF8PSLFSTʹؔ͠ ͯͷͭͷ*TTVF
A&YFDVUJPO$POUFYUAʹAFYQPSUTAϑΟʔϧυ͕ͳ͍ IUUQTHJUIVCDPNIPOPKTIPOPJTTVFT Α͍*TTVF ػೳཁٻ w هड़͕ஸೡ w ӳޠ͕͔Γ͍͢ w ࠷ۙೖͬͨ$MPVE
fl BSFͷػೳʹରԠ͍ͤͨ͞ w ʮ͔֬ʹʯͱ͍͏༰
ACVOAίϚϯυͰ$MPVEGMBSF8PSLFSTͷܗΛ࡞Ζ͏ͱ͢ΔͱΤϥʔ͕ग़Δ w هड़͕ࡶ w ࠶ݱͰ͖ͳ͍ w ͦͦAIPOPAຊମͷ͜ͱͰͳ͍ w ͓ͦΒ͘όάͰͳ͍ IUUQTHJUIVCDPNIPOPKTIPOPJTTVFT
ΑΖ͘͠ͳ͍*TTVF όάใࠂͳΜ͚ͩͲόά ͡Όͳ͍
ੑ࣭ ࣭ ͕͍ͩͿҧ͏ ஸೡ͔ʁࡶ͔ʁ ೲಘͰ͖Δ͔ʁ ਖ਼͍͜͠ͱΛݴ͍ͬͯΔ͔ʁ త
Β͖ͭʹରԠ͠ͳ͘ ͍͚ͯͳ͍ ʮྑ͍͔ѱ͍͔ʯ͚ͩ͡Όͳͯ͘
৭Μͳਓ͕͍ͯ େม
😥
ొࢁ͢Ε ҧ͍
ొࢁͰ͢Εҧ͏࣌ʹѫࡰΛ͠·͢ ॾઆ͋Γʁ
"͞Μ ʮ͜ΜʹͪΘʯ ʮ͜ΜʹͪΘʯ
ਓͰࢁΛొͬͯͨΒ ԼͬͯͨΒ ਖ਼໘͔Βਓͷஂମ͕͖ͬͯͨ
"͞Μ ʮ͜ΜʹͪΘʯ ʮ͜ΜʹͪΘʯ
"͞Μ ʮ͜ΜʹͪΘʯ ʮ͜ΜʹͪΘʯ #͞Μ $͞Μ %͞Μ ʮ͜ΜʹͪΘʯ ʮ͜ΜʹͪΘʯ ʮ͜ΜʹͪΘʯ
ʮ͜ΜʹͪΘʯ ʮ͜ΜʹͪΘʯ ʮ͜ΜʹͪΘʯ Y Y Y Y Y
૬खճ͚ͩ ѫࡰ͢Ε͍͍
Ͱճѫࡰ ͠ͳ͍͚ͯ͘ͳ͍ʂ
͔͠ खՃݮ͍͍ͯ͠Θ͚Ͱͳ͍
"͞Μ #͞Μ $͞Μ %͞Μ ਓ͍Δ͔Βͷύϫʔ
Ͱ͍͍͔ͱݴ͑ͦΜͳ͜ͱͳ͍ ૬खͰདྷΔͷͰͦΕͳΓͷύϫʔ ͕ඞཁ
ਓ͕ݸͷ*TTVF13ʹରԠ͢Δ ొࢁ͢Εҧ͍͕ൃੜ͢Δ
ొࢁ͢Εҧ͍Ͱى͜Δͭͷ
ͦͷ
"͞Μ #͞Μ $͞Μ %͞Μ ܕ ηΩϡϦςΟ 3FBDU ೝূ ਓͷ༷ʑͳਓʑʹରԠ͠ͳ͍͚ͯ͘ͳ͍
ొࢁ͢Εҧ͍ͷͦͷ શͯͷ*TTVF13ʹରԠ͢ΔͨΊʹ͍ࣝΛ࣋ͨͳ͍͚ͯ͘ͳ͍ 8FCͷجૅٕज़ $034$43'&5BH+85ʜ ηΩϡϦςΟ 3'$ΛಡΉ 5ZQF4DSJQUͷܕ ϥΠϒϥϦ 3FBDU7BMJEBUPSೝূܥ ϛυϧΣΞ
0UFM1SPNFUIFVT ֎෦αʔϏε 4FOUSZ$MPVE fl BSF ϥϯλΠϜ $MPVE fl BSF%FOP#VO'BTUMZ/PEFKT ಛʹ)POPʑͷΞμϓλͱϛυϧΣΞ͕͋Δ
ͦͷ
"͞Μ #͞Μ $͞Μ %͞Μ ܕ ηΩϡϦςΟ 3FBDU ೝূ ͦΕͧΕ͕ͰͿ͔ͭͬͯ͘Δ
ࣗͷ͜ͱ͚ͩߟ͑Ε͍͍ ͦΕΛड͚ࢭΊͳ͍͚ͯ͘ͳ͍
ొࢁ͢Εҧ͍ͦͷ ຊਓݸ͚ͩߟ͑ͯΕ͍͍͚ͲɺݸݟΔ ݸʹରͯ͠ˋ͘Β͍ͷ͕ࣝཁٻ͞ΕΔ͍͔͔࣌ؒ͢͝Δ IUUQTHJUIVCDPNIPOPKTIPOPQVMM 4FDVSF)FBEFSTϛυϧΣΞ AQFSNJTTJPOT1PMJDZAͷUZQP 1FSNJTTJPOT1PMJDZϔομͱ͍͏ͷ ͕͋ͬͯAHBNFQBEA͕ࢦఆͰ͖Δ IUUQTEFWFMPQFSNP[JMMBPSHKBEPDT8FC)5513FGFSFODF )FBEFST1FSNJTTJPOT1PMJDZHBNFQBE
ௐ͍͍͔ͯΒཧղ͠ͳ͍ͱ͍͚ͳ͍
ͦͷ
"͞Μ #͞Μ $͞Μ %͞Μ ܕ ηΩϡϦςΟ 3FBDU ೝূ ਓ͕มΘΔςʔϚ͕มΘΔ
ొࢁ͢Εҧ͍ͦͷ ʮܕʹ͍ͭͯߟ͑ͯͨΒɺηΩϡϦςΟϨϙʔτ͕͖ͨʯ "͔Β#ͷΓସ͕͑େมίϯςΩετεΠονϯάίετ͕ൃੜ͢Δ *TTVF" *TTVF# *TTVF" 5ZQF4DSJQUͷܕ *TTVF$ ηΩϡϦςΟ 5ZQF4DSJQUͷܕ
λΠϙͷमਖ਼ ίϯςΩετεΠον ίϯςΩετεΠον
ྫ$MPVEGMBSF3ͷʮ564ʯΞοϓϩʔυྫΛ8FCαΠτʹՃ͍ͨ͠ IUUQTHJUIVCDPNIPOPKTXFCTJUFQVMM 5640QFO1SPUPDPMGPS3FTVNBCMF'JMF6QMPBET 564
ొࢁ͢Εҧ͍ ͕େม
😥
όά͕ ࠶ݱͰ͖ͳ͍
*TTVFͰใࠂ͞ΕΔόά खݩͰ࠶ݱͰ͖ͳ͍
όά࠶ݱͯͦͤ͜͠Δ ͳͥ࠶ݱ͕େࣄ͔ʁ
࠶ݱ͠ͳ͍ͱʜ Ͳ͜Λ͍͍ͤͷ͔͔Βͳ͍
࠶ݱ͠ͳ͍ͱʜ ͔ͬͨͲ͏͔͔Βͳ͍
ؒҧͬͨڍಈ ਖ਼͍͠ڍಈ ͢ όά͕࠶ݱ͢Δ
ʁʁ ΄Μͱʹͬͨͷʁʁ ͨ͠ Β͍͠ όά͕࠶ݱ͠ͳ͍
ͦͯ͠ όάΛ࠶ݱ͢ΔʹԿ͕όά ͔ʁΛΒͳ͍ͱ͍͚ͳ͍
όά ػೳ" ػೳ# ػೳ$ ػೳ% ػೳ& ͜Ε͕όάͰ͢ʂ ͲΕʁʁ ΞϓϦέʔγϣϯݻ༗ͷػೳ͕ೖͬͯΔͱ Ͳ͕͜όά͔͔ͩΒͳ͍
όά ͜Ε͕όάͰ͢ʂ ͜ΕͶʂ όά͚ͩΛΓ͍ͨ
Α͘ͳ͍ྫ IUUQTHJUIVCDPNIPOPKTIPOPJTTVFT
ΞϓϦέʔγϣϯݻ༗ͷػೳ ͬͯΔػೳ͕ଟ͍ ίʔυ͕͍
όά͚͕ͩΓ͍ͨͷʹͲΕ ͔͔Βͳ͍
ͦΜͳ࣌ʹศརͳͷ͕
όάΛ࠶ݱ͢ΔͨΊͷ࠷খݶͷϓϩδΣΫτ .JOJNBM3FQSPEVDUJPO
AHJUDMPOFA͢Δ͚ͩͰ࠶ݱͰ͖Δͷ͕ཧ 6TJOHNJEEMFXBSFJOGBDUPSZDSFBUF)BOEMFSTCSFBLTUZQJOH31$ IUUQTHJUIVCDPNIPOPKTIPOPJTTVFT
ਯ͞Μͷهࣄ IUUQT fi OEZDPEFJPNFEJBBSUJDMFTDPEFTJEFDIBUTBQQIJ@SFE@KB
͜Ε .JOJNBM3FQSPEVDUJPO ͕ఏڙ͞Ε Δ͜ͱͰɺ͋ͳͨݸਓͷڥ͚ͩͰى͜Δ ಛघͳͰͳ͘ɺʮ୭ͷڥͰ࠶ݱ Ͱ͖ΔɺϓϩδΣΫτ͕ղܾ͖͢ڞ௨ͷ ʯͱঢ՚ͤ͞Δ͜ͱ͕Ͱ͖Δ IUUQT fi OEZDPEFJPNFEJBBSUJDMFTDPEFTJEFDIBUTBQQIJ@SFE@KB
.JOJNBM3FQSPEVDUJPO ૉΒ͍͠ʂ
Ͱ ࠶ݱͰ͖ͳ͍͔ͭ.JOJNBM3FQSPEVDUJPO͕ ͳ͍͜ͱ͕ଟ͍ʂ
l1MFBTFQSPWJEFB NJOJNBMQSPKFDU UPSFQSPEVDFJUz
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όά͕࠶ݱ͠ͳ ͯ͘େม
😥
όάͱݴ͍ͭͭό ά͡Όͳ͍͜ͱ͕ଟ ͍ʂ
*TTVFͰ͕͋ͬͯ͘Δόάͷ ଟ͘όάͰͳ͍
*TTVFͷτϦΞʔδ USJBHF CVH OPUCVH TUBMF $MPTF ؒ ؒ ϥϕϧΛ͚ͭΔ मਖ਼
݄ʙ݄ͷAUSJBHFA
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8IZΛฉ͔Ε Δ͕ਏ͍
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/PΛݴ͏ʹ ମྗ͕͍Δ
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044Ͱಉ͡
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ํ$POUFYUʮϢʔβʔ͕࡞Βͳ͍ʯͷ ͜͜ʹೖͬͯ͘Δ
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·ͩΦʔϓϯͳΜ͚ͩͲ Ͳ͏͠Α͏͔ͳʜ
/Pͱݴ͏ͷʹ ମྗ͕͍Δ
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͞Βʹྫ
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ΞϓϦΛ࡞Δ།Ұͷํ๏Ͱͳ͍
Ͷͨ·ΕΔ
ߩݙ ૬खʹϓϥε ͶͨΈ ૬खʹϚΠφε
044ʹ ʮίϯτϦϏϡʔτʯͱผͷੈք͕͋Δ
ࣧౄ͞Εͯਏ͍
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࣏ʹר͖ ࠐ·ΕΔ
ଟ͘ͷڥͰಈ͔͘Βͦ͜εςʔΫϗϧμ͕ଟ͍ ࣏ʹר͖ࠐ·ΕΔ
ྫ$MPVEGMBSFWT7FSDFM
࣏ʹר͖ࠐ· Εͯେม
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൵͍͠ൃݴ
IUUQTHJUIVCDPNIPOPKTIPOPJTTVFT JTTVFDPNNFOU
ଟ͘ޠΒͳ͍͚Ͳ "͞Μ͕*TTVFΛཱͯΔ #͞Μ͕ॿ͚Α͏ͱ͢Δ "͞ΜͦΕʹରͯ͠ʮOPUIFMQGVMʯͱݴ͏
ॿ͚Α͏ͱ͍ͯ͠Δਓʹ ܾͯ͠ʮʹཱͨͳ͍ʯ ͳΜͯݴ͍͚ͬͯͳ͍
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൵͍͠ൃݴ͕ਏ ͍
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Ҏ্ɺۤ࿑
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ر
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IUUQTHJUIVCDPNIPOPKTIPOPJTTVFT
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ΞΠσΞͱ࣮ ྗͰઓ͖ͬͯͨ
IUUQTHJUIVCDPNIPOPKTIPOPQVMM
IUUQTHJUIVCDPNIPOPKTIPOPJTTVFT
)POP $POGFSFODF
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ݩதֶੜίϯτ ϦϏϡʔλʔ
None
)POP"XBSET
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l-FHFOEz
IUUQTYDPN+BDPC.(&WBOTTUBUVT
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৭Μͳਓ͕Λ ͔͚ͯ͘ΕΔ
None
ม͑Δ
None
ܨ͙
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ίϯτϦϏϡʔλʔ
IUUQHJUIVCDPNIPOPKT શͯͷϓϩδΣΫτ߹ܭ ࣌
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͋Γ͕ͱ͏
͜Ε͕
ͷݟ͖ͯͨ ܠ৭
044։ൃऀͷ༕ᓔ
5IBOLZPV